WordNet sense 1 (euphemistic expressions for death):

departure, exit, expiration, going, loss, passing

WordNet sense 2 (an announcement distributed to members of the press in order to supplement or replace an oral presentation):

handout, press release

WordNet sense 3 (a legal document evidencing the discharge of a debt or obligation):

acquittance, acquittance

WordNet sense 4 (a device that when pressed will release part of a mechanism):

button

WordNet sense 5 (make (information) available publication):

free

WordNet sense 6 (grant freedom to; free from confinement):

liberate, loose, unloose, unloosen

WordNet sense 7 (part with a possession or right):

relinquish, resign, resign, give up

WordNet sense 8 (release, as from one's grip):

let go of, let go

WordNet sense 9 (let (something) fall or spill a container):

turn

WordNet sense 10 (activity that frees or expresses creative energy or emotion):

outlet, vent

WordNet sense 11 (prepare and issue for public distribution or sale):

issue, publish, bring out, put out

WordNet sense 12 (the act of allowing a fluid to escape):

spill, spillage

WordNet sense 13 (make (assets) available):

unblock, unfreeze

WordNet sense 14 (the termination of someone's employment (leaving them free to depart)):

discharge, dismissal, liberation, sack, sacking, firing, dismission, discharge

WordNet sense 15 (a formal written statement of relinquishment):

waiver

WordNet sense 16 ((music) the act or manner of terminating a musical phrase or tone):

tone ending

WordNet sense 17 (eliminate (substances) from the body):

eject, expel

WordNet sense 18 (the act of liberating someone or something):

freeing

WordNet sense 19 (generate and separate from cells or bodily fluids):

secrete, secrete