Hundred  adj. & n. (pl. Hundreds or (in sense 1) hundred) (in sing., prec. By a or one) 1 ten times ten. 2 symbol for this (100, c, c). 3 (in sing. Or pl.) Colloq. A large number. 4 (in pl.) The years of a specified century (the seventeen hundreds). 5 hist. Subdivision of a county or shire, having its own court.  hundredfold adj. & adv. Hundredth adj. & n. [old english]