Noun

• S: (n) contraction, muscular contraction, muscle contraction ((physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber))
• S: (n) compression, condensation, contraction (the process or result of becoming smaller or pressed together) "the contraction of a gas on cooling"
• S: (n) contraction (a word formed from two or more words by omitting or combining some sounds) "`won't' is a contraction of `will not'"; "`o'clock' is a contraction of `of the clock'"
• S: (n) contraction (the act of decreasing (something) in size or volume or quantity or scope)