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Buttock vs Undefined - What's the difference?

buttock | undefined |

As a noun buttock

is (usually|in the plural) each of the two large fleshy halves of the posterior part of the body between the base of the back, the perineum and the top of the legs.

As an adjective undefined is

lacking a definition or value.

buttock

English

Noun

(en noun)
  • (usually, in the plural) Each of the two large fleshy halves of the posterior part of the body between the base of the back, the perineum and the top of the legs.
  • The convexity of a ship behind, under the stern.
    • (the Maritime Dictionary)

    Usage notes

    The plural form is usually used in the singular sense for a single person's posterior, often called butt . It is rarer to refer to only a single buttock, which is then usually specified as left or right.

    Synonyms

    * asscheek (crude) * butt-cheek * arsecheek (crude) * bum-cheek * cheek * ham * mound * (plurale tantum) hurdies (p) * See also

    See also

    * callipygian/callipygous * dasypygal

    References

    * * English words suffixed with -ock

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined