k]
| 1. | Usually, buttocks.
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| 2. | Sometimes, buttocks. Nautical. the aftermost portion of a hull above the water line and in front of the rudder, merging with the run below the water line. |
buttock but·tock (bŭt'ək)
n.
Either of the two rounded prominences on the human torso that are posterior to the hips and formed by the gluteal muscles and underlying structures.
buttocks The rear pelvic area of the human body.