the GNU version of the Collaborative International Dictionary of English
v. To cut off the head of; to behead.
v. To remove summarily from office.
The Century Dictionary and Cyclopedia
To behead; cut off the head of.
To remove from office summarily.
In mathematics, to strike out, as the highest number of the symbol, in the symbolic method of calculating seminvariants.
Of a word, to cut off the beginning.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. cut the head of
Word Usage
"There's an intriguing story in today's Telegraph about how the Tories plan to "decapitate" - that is, target and win the seats of - certain Labour ministers come the next election."