n.1 the digit 0; a cipher.
2 poet. or archaic (in certain phrases) nothing (cf. NAUGHT).
Phrases and idioms:
noughts and crosses a paper-and-pencil game with a square grid of nine squares, in which players seek to complete a row of three noughts or three crosses entered alternately.
Etymology: OE nowiht f. ne not + owiht var. of awiht AUGHT(1)