Noun anal sphincter has 1 sense
  1. anal sphincter, sphincter ani, musculus sphincter ani - the sphincter muscle of the anus
    --1 is a kind of sphincter, anatomical sphincter, sphincter muscle
    --1 is a part of anus, arse, arsehole, asshole
    --1 has parts: musculus sphincter ani externus; musculus sphincter ani internus
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