• WordNet 3.6
    • n shillalah a cudgel made of hardwood (usually oak or blackthorn)
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Webster's Revised Unabridged Dictionary
    • n Shillalah An oaken sapling or cudgel; any cudgel; -- so called from Shillelagh, a place in Ireland of that name famous for its oaks.
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Century Dictionary and Cyclopedia
    • n shillalah An oak or blackthorn sapling, used in Ireland as a cudgel.
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Chambers's Twentieth Century Dictionary
    • n Shillalah shi-lā′la an oak sapling, the oak or blackthorn cudgel of the conventional Irishman
    • Shillalah Also Shille′lah, Shillā′ly
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In literature:

She was leaning over the bulwark just now, laughing at the queer gossoons selling their shillalahs.
"Frances Waldeaux" by Rebecca Harding Davis
The German had turned his automatic on the defenders when Hogan's shillalah caught him on the temple.
"The Cruise of the Dry Dock" by T. S. Stribling
Until we began hitting out with our little shillalah, nobody had ever dared venture a peep of disapproval.
"The Clarion" by Samuel Hopkins Adams
The handy weapon of the Irish was the shillalah, that of the Italian is the stiletto.
"Aliens or Americans?" by Howard B. Grose
Sam said he wanted to swing a shillalah.
"Three Boys in the Wild North Land" by Egerton Ryerson Young
It's delightful to find you so loyal to your 'black sheep,' but fisticuffs won't answer, nor even a shillalah.
"Reels and Spindles" by Evelyn Raymond
Both are made of steel and both will mirror sometimes the shillalah.
"Jap Herron" by Emily Grant Hutchings
It might have been noted that Poet Gorman cut the biggest shillalah of any of them.
"King Spruce, A Novel" by Holman Day
True to his inherited instincts, the Irish lad had snatched up some sort of stick, to serve him as a shillalah.
"Motor Boat Boys on the Great Lakes" by Louis Arundel