verb (used with object) Veterinary Medicine.

to remove the upper beak from (a bird) to prevent egg eating or attacks on other birds.

Origin of debeak

First recorded in 1935–40; de- + beak
Related formsde·beak·er, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for debeaker


verb (tr)

to remove part of the beak of poultry to reduce the risk of such habits as feather-picking or cannibalism
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012