adj. 1 unmarried, unwed, unattached, free; celibate She remained single till she was twenty-two 2 singular, individual, distinct, solitary; one, only, sole, lone, unique, isolated There wasn't a single person there who could think for himself A single shot rang out. 3 separate, distinct, individual, solitary Every single hair is rooted in its follicle
v. 4 single out. select, choose, pick, separate, take or put or set aside or apart, distinguish, cull, segregate, fix or fasten on: Why was she singled out for special treatment?