1.Having one side only, or one side prominent.
2.Hence: Limited to one side; favoring one person or side over another; partial; unjust; unfair; as, a one-sided view or statement. "Unguarded and one-sided language."
3.Having one team or party greatly superior; strongly favoring only one side; uneven; imbalanced; unequal; as, a one-sided contest; of contests, generally.
4.(Bot.) Growing on one side of a stem; as, one-sided flowers.
5.Using only one side, or having only one side usable; as, one-sided printing; one-sided film; used mostly of sheets of material used for printing or imaging.
6.Performed by only one party or side; of actions directly affecting more than one party. Opposite of multilateral.
7.Out of proportion in shape.
8.Not reversible or capable of having either side out; of cloth fabrics or clothing. Opposite of reversible.