any witty, ingenious, or pointed saying tersely expressed.

epigrammatic expression

Oscar Wilde had a genius for epigram.

a short, often satirical poem dealing concisely with a single subject and usually ending with a witty or ingenious turn of thought.

noun

aphorism , bon mot , joke , motto , pithy saying , quip , quirknotes:an epigram is a short statement that makes an interesting , frequently profound , observation about life or the world; an epigraph is a statement culled from the writings or sayings of someone else and used as the heading , adage , poem , saying , statement , witticism