• WordNet 3.6
    • adj leonine of or characteristic of or resembling a lion
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Webster's Revised Unabridged Dictionary
    • a Leonine Pertaining to, or characteristic of, the lion; as, a leonine look; leonine rapacity. "Gloria factorum temere conceditur horum ."
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Century Dictionary and Cyclopedia
    • leonine Pertaining to or resembling a lion; lion-like: as, leonine fierceness or rapacity.
    • leonine In prosody, consisting of metrical Latin hexameters or elegiacs (alternate hexameters and pentameters), in which the final word rimes with the word immediately preceding the cesural pause or the middle of the line. The correspondence of sound between the terminations of the two halves of the pentameter is frequently imperfect, affecting unaccented syllables only, so as not to amount to a perfect rime. Leonine verses were extensively used in the middle ages, even as early as the eighth century. The following Latin version of “The devil was sick,” etc., is a leonine elegiac couplet:
    • leonine Pertaining to a person named Leo, particularly to several popes of that name; more specifically, of or pertaining to Leo I., the Great (pope from 440 to 461), who is said to have added certain words to the Roman canon of the mass, and whom some have even, without good reason, described as the author of the Roman liturgy. A Roman sacramentary extant in a manuscript assigned to the eighth century is known as the Leonine Sacramentary.
    • n leonine A coin illegally imported into England by foreign merchants in the reign of Edward I. It was made of silver, alloyed, and was intended to circulate with the silver pennies then legally current. Probably so called because its obverse type was a lion.
    • n leonine plural Leonine verse.
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Chambers's Twentieth Century Dictionary
    • adj Leonine lē′o-nīn of or like a lion.
    • adj Leonine lē′o-nīn a kind of Latin verse, generally alternate hexameter and pentameter, rhyming at the middle and end.
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Webster's Revised Unabridged Dictionary
L. leoninus, fr. leo, leonis, lion: cf. F. léonin,. See Lion
Chambers's Twentieth Century Dictionary
From Leoninus, a 12th-cent. canon in Paris; or from Pope Leo II.


In literature:

His face was leonine in expression.
"For the Temple" by G. A. Henty
Little Tim followed suit almost as vigorously, accompanying his action with a leonine roar.
"The Prairie Chief" by R.M. Ballantyne
His hair was tumbled over his head in a leonine mass.
"The Genius" by Margaret Horton Potter
But with beer to be gained by boldness, Ichabod was leonine in courage.
"Julia And Her Romeo: A Chronicle Of Castle Barfield" by David Christie Murray
The venerable painter stood up with a calm and leonine expression.
"Punch, or the London Charivari, Vol. 150, January 5, 1916" by Various
The old leonine fellow was transfigured, as though by megalomania.
"Sacrifice" by Stephen French Whitman
Do you know that Floyd is rather of the leonine order?
"Floyd Grandon's Honor" by Amanda Minnie Douglas
The voice of his passions was leonine, but his moral sensibility wanted delicacy.
"A History of French Literature" by Edward Dowden
At this moment a leonine head, supported on a lumbering and ill-balanced body, was thrust in between them.
"Scally" by Ian Hay
His hair was long, and this gave him a somewhat leonine aspect.
"Ralph on the Overland Express" by Allen Chapman
His massive chest and broad shoulders were capped by a leonine head, from which looked the imperious eyes of a born leader of men.
"Bert Wilson on the Gridiron" by J. W. Duffield
Kneeling at his side he raised the great leonine head.
"The Night Riders" by Ridgwell Cullum
On the other hand groans were given with leonine force both for Morley and his master.
"Ireland as It Is" by Robert John Buckley (AKA R.J.B.)
He was a poor, crippled man, with enormous vitality and a leonine head.
"The Eye of Dread" by Payne Erskine
Then I bethought myself of having him shaved in the style of poodles, in order to bring out completely his leonine appearance.
"My Private Menagerie" by Theophile Gautier
There is something very leonine in his face, with a dash of the negro especially, if I remember aright, in the mouth.
"The Works of Robert Louis Stevenson - Swanston Edition Vol. 23 (of 25)" by Robert Louis Stevenson
Their fists were up, and they eyed each other in a calm that had the elements of leonine cruelty in it.
"The Monster and Other Stories" by Stephen Crane
The head was white-maned, leonine, with handsome florid features and sharp blue eyes.
"The Sensitive Man" by Poul William Anderson
And already the other horseman, in front of Zazo, bent a leonine face toward him.
"The Scarlet Banner" by Felix Dahn
The leonine face beamed.
"The Brain" by Alexander Blade

In poetry:

The gaudy leonine sunflower
Hangs black and barren on its stalk,
And down the windy garden walk
The dead leaves scatter, - hour by hour.
"Le Jardin" by Oscar Wilde
Millions of men
With a vestige of manhood,
Wild-eyed and gaunt-throated,
Shout with a leonine
Accent of anger,
Leaves us the wheat-fields!
"The Harvest" by Duncan Campbell Scott
An eagle eye, a vulture's fight,
A stroke leonine in might;
The man was formed
For that resolving, deep inert
Which sprang stupendously alert,
And, sometimes, stormed.
"Stonewall Jackson" by Albery Allson Whitman
No more the leonine heroic head,
The ruling arm, great heart, and kingly eye;
No more th' alchemic tongue that turned poor themes
Of statecraft into golden-glowing dreams;
No more a man for man to deify:
Laurel no more--the heroic age is dead.
"On Mr. Gladstone's Retirement" by Richard Le Gallienne

In news:

The notion that this is going to happen soon has just been fatally harpooned by giant Elephant Seals ( Mirounga leonine ).
With his hulking frame and leonine face, I guess it was inevitable that Liam Neeson would morph into a bona fide action star.