Not accompanied by another or others; solitary. Consisting of one part, aspect, or section: a single thickness; a single serving. Having the same application for all; uniform: a single moral code for all. Consisting of one in number: She had but a single thought, which was to escape. Not divided; unbroken: a single slab of ice. Separate from others; individual and distinct: Every single child will receive a gift. Having individual opponents; involving two individuals only: single combat. Honest; undisguised: a single adoration. Wholly attentive: You must judge the contest with a single eye. Designed to accommodate one person: a single bed. Unmarried. Lacking a partner: a single parent. Relating to the unmarried state: enjoys the single life. Of or relating to celibacy. Botany Having only one rank or row of petals: a single flower. One that is separate and individual. An accommodation for one person, as in a hotel. An unmarried person. Unmarried persons considered as a group: a bar for singles. A one-dollar bill. A phonograph record, especially a forty-five, having one song on each side. A song on one of these sides. A song, often from a full-length album or compact disk, that is released for airplay. Baseball A hit by which a batter reaches first base safely; a one-base hit. Sports A hit for one run in cricket.