a cardinal number, five plus one.

a symbol for this number, as 6 or VI.

a set of this many persons or things.

a playing card, die face, or half of a domino face with six pips.

Cricket . a hit in which the ball crosses the boundary line of the field without a bounce, counting six runs for the batsman. Compare boundary ( def. 3 ) .

an automobile powered by a six-cylinder engine.

a six-cylinder engine.

amounting to six in number. ?

at sixes and sevens

in disorder or confusion.

in disagreement or dispute.

adjective

hexadic , hexagonal , semestral , senary , sextuple

noun

hexad , hexagon , hexagram , semester , sextet , sextuplet

verb

sextuple