Verb

(en verb)

To forbid, disallow, or proscribe officially; to make illegal or illicit.

*{{quote-magazine, date=2013-06-07, author= Ed Pilkington

, volume=188, issue=26, page=6, magazine=(The Guardian Weekly) , title= ‘Killer robots’ should be banned in advance, UN told , passage=In his submission to the UN, [Christof] Heyns points to the experience of drones. Unmanned aerial vehicles were intended initially only for surveillance, and their use for offensive purposes was prohibited , yet once strategists realised their perceived advantages as a means of carrying out targeted killings, all objections were swept out of the way.}}

Verb

(en verb)

To abstain, either as an individual or group, from using, buying, or dealing with someone or some organization as an expression of protest.