v. To work together with others to achieve a common goal.
v. To voluntarily cooperate treasonably, as with an enemy occupation force in one's country.
the GNU version of the Collaborative International Dictionary of English
verb-intransitive. to work together with another toward a common goal, especially in an intellectual endeavor.
verb-intransitive. to willingly cooperate with an enemy, especially an enemy nation occupying one's own country.
The Century Dictionary and Cyclopedia
To work with another or others; coöperate with another or others in doing or producing something; especially, to work with another in a literary production or a scientific investigation.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. work together on a common enterprise of project
v. cooperate as a traitor
Word Usage
"I collaborated with the CIA the way I-- use the word collaborate -- the way I collaborated with the State Department, the way I collaborated with anybody in government."