Once /(ŏns)/

Once

n.
  1. The ounce. (Zool.)

Once

adv.
  1. For one time; by limitation to the number one; not twice nor any number of times more than one.
    Ye shall . . . go round about the city once.
    — Josh. vi. 3.
    Trees that bear mast are fruitful but once in two years.
  2. At some one period of time; -- used indefinitely.
    My soul had once some foolish fondness for thee.
    That court which we shall once govern.
  3. At any one time; -- often nearly equivalent to ever, if ever, or whenever; as, once kindled, it may not be quenched.
    Wilt thou not be made clean? When shall it once be?
    — Jer. xiii. 27.
    To be once in doubt Is once to be resolved.

Phrases & Compounds

At once
At the same point of time; immediately; without delay.
Once and again
once and once more; repeatedly.