Definition from Wiktionary, the free dictionary
Etymology 1 
items or material that have been discarded
Etymology 2 
- (transitive) To decline (a request or demand).
- My request for a pay rise was refused.
- I refuse to listen to this nonsense any more.
- 2011 September 27, Alistair Magowan, “Bayern Munich 2 - 0 Man City”, BBC Sport:
- City were outclassed thereafter and Roberto Mancini said that substitute Carlos Tevez refused to play.
- (intransitive) To decline a request or demand, forbear; to withhold permission.
- I asked the star if I could have her autograph, but she refused.
- (military) To throw back, or cause to keep back (as the centre, a wing, or a flank), out of the regular alignment when troops are about to engage the enemy.
- to refuse the right wing while the left wing attacks
- (obsolete, transitive) To disown.
- Refuse thy name.
Usage notes 
- (decline): decline, reject, nill, say no to, turn down, veto, withsake
- (decline a request or demand): say no, forbear
(transitive) decline (request, demand)
(intransitive) decline a request or demand
- first-person singular present indicative of refuser
- third-person singular present indicative of refuser
- first-person singular present subjunctive of refuser
- third-person singular present subjunctive of refuser
- second-person singular imperative of refuser