verb (used with object) Veterinary Medicine.
  1. 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. 2018

British Dictionary definitions for debeak


verb (tr)
  1. 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