Once — Defs

01 n. The ounce.

02 adv. For one time; by limitation to the number one; not twice nor any number of times more than one.

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.” — Bacon.
2.
At some one period of time; -- used indefinitely.
“My soul had once some foolish fondness for thee.” — Addison.

“That court which we shall once govern.” — Bp. Hall.
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.” — Shak.

Phrases & compounds

At once — At the same point of time; immediately; without delay.

Once and again — once and once more; repeatedly.