—n. (pl. thousands or (in sense 1) thousand) (in sing. prec. by a or one)
1 the product of a hundred and ten.
2 a symbol for this (1,000, m, M).
3 a set of a thousand things.
4 (in sing. or pl.) colloq. a large number.
—adj. that amount to a thousand.
Derivatives:
thousandfold adj. & adv. thousandth adj. & n.
Etymology: OE thusend f. Gmc
Useful english dictionary. 2012.