D defs.my
Entry 1 sense Webster, 1913

ullage

/(ŭl"lā̇j; 48)/ · ul·lage · IPA /ˈʌl.ɪd͡ʒ/
01 n. The amount which a vessel, as a cask, of liquor lacks of being full; wantage; deficiency.
  1. 1.
    The amount which a vessel, as a cask, of liquor lacks of being full; wantage; deficiency.(Com.)