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ABCDEFGHIJKLMNOPQRSTUVWXYZ
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knucklehead
knuckler
knur
knurl
knurr
KO
koa
koala
koan
Kobe
Koblenz
kobo
kobold
Kobuk Valley National Park
Kodiak (1)
Kodiak (2)
Kodiak Island
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knuckle down
knuckle down


intransitive verb 
Definition:
 
work hard: to work hard and conscientiously at something ( informal )

Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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