adj. & n.
adj. 1 unique; much beyond the average; extraordinary. 2 eccentric or strange. 3 Gram. (of a word or form) denoting or referring to a single person or thing. 4 Math. possessing unique properties. 5 single, individual.
n. Gram. 1 a singular word or form. 2 the singular number. singularly adv.
[ ME f. OF singuler f. L singularis (as SINGLE) ]