The number 1000.

Used in a common chronometric counting scheme, in which each iteration is sequentially numbered and supposed to be approximately one second in length.

The number 100.

The cardinal number immediately following thirty and before thirty-two; thirty plus one.

(card games) Blackjack. / (sports) A basketball-based game in which players attempt to score exactly twenty-one points.

The cardinal number occurring after twenty and before twenty-two, represented in Roman numerals as XXI and in Arabic numerals as 21.

(agriculture) To use a disc harrow to turn the soil and kill weeds, in preparation for planting seeds.

(idiomatic) Close to death.

Partial or biased in favour of one faction or demographic group. / With one competitor dominant over the other. / Out of proportion or lopsided. / Having only one side, like a Möbius strip.

Allowing movement in only one direction; unidirectional. / Allowing travel in only one direction.