D defs.my
Entry 3 senses Webster, 1913

Requiem

/(r?"kw?-?m;277)/ · Re·qui·em · IPA /ˈɹɛ.kwi.əm/
01 n. A mass said or sung for the repose of a departed soul.
  1. 1.
    A mass said or sung for the repose of a departed soul.(R.C.Ch.)
    “We should profane the service of the dead To sing a requiem and such rest to her As to peace-parted souls.” Shak.
  2. 2.
    Any grand musical composition, performed in honor of a deceased person.
  3. 3.
    Rest; quiet; peace.[Obs.]
    “Else had I an eternal requiem kept, And in the arms of peace forever slept.” — Sandys.