• WordNet 3.6
    • v knap break a small piece off from "chip the glass","chip a tooth"
    • v knap strike sharply "rap him on the knuckles"
    • ***
Webster's Revised Unabridged Dictionary
    • n Knap năp A protuberance; a swelling; a knob; a button; hence, rising ground; a summit. See Knob, and Knop. "The highest part and knap of the same island."
    • n Knap A sharp blow or slap.
    • Knap To bite; to bite off; to break short. "He will knap the spears apieces with his teeth.""He breaketh the bow, and knappeth the spear in sunder."
    • v. i Knap To make a sound of snapping.
    • Knap To strike smartly; to rap; to snap.
    • ***
Century Dictionary and Cyclopedia
    • knap To strike with a sharp noise.
    • knap To snap; crack; break in pieces with blows: as, to knap stones.
    • knap To bite; bite off; nibble.
    • knap To make a short sharp sound.
    • knap To talk short.
    • n knap A short sharp noise; a snap.
    • n knap A stroke; blow.
    • n knap A clapper.
    • n knap A protuberance; a swelling; a knob or button.
    • n knap A rising ground; a knoll; a hillock; a summit.
    • n knap The bud of a flower.
    • n knap The flower of the common clover, Trifolium pratense.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Knap nap to snap or break with a snapping noise: to break in pieces with blows, as stones: to bite off, nibble
    • pr.p Knap knap′ping; pa.p. knapped
    • n Knap nap (Bacon) a protuberance, a hillock
    • ***


Webster's Revised Unabridged Dictionary
AS. cnæp, cnæpp, top, knob, button; cf. Icel. knappr, knob, Sw. knapp, Dan. knap, button, W., Gael., & Ir. cnap, knob, button, and E. knop,
Chambers's Twentieth Century Dictionary
Conn. with knob, knop.


In literature:

And 'tis on the knap afore the old captain's house at Mistover.
"Return of the Native" by Thomas Hardy
He planned to load his knap-sack upon it.
"The Red Badge of Courage" by Stephen Crane
Ye can knap the French with him better than I.
"Two Penniless Princesses" by Charlotte M. Yonge
Its situation gave the house what little distinctive name it possessed, namely, 'The Knap.
"Wessex Tales" by Thomas Hardy
After knaps you are more rested and maybe things don't look just as they do before knaps.
"Rebecca Mary" by Annie Hamilton Donnell
He went to his room, strapped on his heavy knap-sack, and came down stairs.
"Veronica And Other Friends" by Johanna (Heusser) Spyri
The art of flint-knapping reached its zenith in Ancient Egypt.
"History Of Egypt, Chaldæa, Syria, Babylonia, And Assyria In The Light Of Recent Discovery" by L.W. King and H.R. Hall
And 'tis on the knap afore the old captain's house at Mistover.
"The Return of the Native" by Thomas Hardy
Knap, to break in two; also, to speak after the manner of the English.
"St. Ronan's Well" by Sir Walter Scott
I'm going to knap one when I get back.
"Dick o' the Fens" by George Manville Fenn
Also, a blow or correction, as "you'll knap it," for some misdeed.
"The Sailor's Word-Book" by William Henry Smyth
When the inhabitants were removed to Knap in North Curry and elsewhere, they took their old rafters with them or sold these.
"Hugh, Bishop of Lincoln" by Charles L. Marson
It's a gude tree that has neither knap nor gaw.
"The Proverbs of Scotland" by Alexander Hislop
They've brought forward all their knap-sacks, and piled them on a desk for decoration.
"A Woman's Experience in the Great War" by Louise Mack
Dr. Knap was just saying it was a magnificent piece of work.
"Dry Fish and Wet" by Anthon Bernhard Elias Nilsen
At Groton, Mass., in 1671, Elizabeth Knap was more singularly beset than most others of that century who were deemed bewitched.
"Witchcraft of New England Explained by Modern Spiritualism" by Allen Putnam
To this may be placed our names Knapp, Napp, and the patronymic Knapping.
"Surnames as a Science" by Robert Ferguson
Joseph M. Knap; Pa. Light, Batt.
"From Manassas to Appomattox" by James Longstreet
For packing the cards or knapping the dice I never came across his equal.
"The Watchers" by A. E. W. (Alfred Edward Woodley) Mason
When we first started from Thomasville one of the guards came up to me and said, 'Yank, I want you to carry this knap-sack.
"The Dispatch Carrier and Memoirs of Andersonville Prison" by William N. Tyler

In poetry:

So, lest I disturb my choice vision,
I shun the West Highway,
Even now, when the knaps ring with rhythms
From blackbird and bee;
"My Cicely" by Thomas Hardy

In news:

Old Stone Fort to hold biannual Knap-in and Archaeoskills Festival Sept 28-30.
Old Stone Fort to hold biannual Knap -in and Archaeoskills Festival Sept 28-30.
Lucinda Knap Hart recently captured this sunset on Waterman Hill.
Also expect flint knapping, native plants, Junior Ranger activities from the National Park service, atlatl (spear) throwing, 100 tables with prehistoric artifacts and fossil items, and artifact and bone identification by experts.
"Ben, patiently awaiting the human's throw," says Lucinda Knap Hart of Manzanita Island, Chippewa Bay.

In science:

Gavini, V., Knap, J., Bhattacharya, K., Ortiz, M., 2007b.
Realistic time-scale fully atomistic simulations of surface nucleation of dislocations in pristine nanopillars
On the one hand, we think that this is at least partly due to the potential first observers having been busy knapping flint, and, on the other hand, it sounds like it ought to be somehow associated with the fact that 95% of old comets with periods less than 106 years are missing (Neslusan 2006).
Astrophysics in 2006