haunches

buttocks

noun

either of the two round fleshy parts of the human body that form the bottom.

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buttock

noun

either of the two round fleshy parts of the human body that form the bottom.

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backsides

/bakˈsʌɪd/
/ˈbaksʌɪd/

noun

A person’s buttocks.

buttocks,behind,backside,bottom,rear,rear end,seat,haunches,cheeks

adjective

(of a manoeuvre in surfing and other board sports) done clockwise for a regular rider and anticlockwise for a goofy rider.

Next would be big backside floaters or under the lip lay back snaps.

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backside

/ˈbækˌsaɪd/

noun

A person’s buttocks or rump.

buttocks,behind,backside,bottom,rear,rear end,seat,haunches,cheeks

adjective

(of a maneuver in surfing and other board sports) done clockwise for a regular rider and counterclockwise for a goofy rider.

Next would be big backside floaters or under the lip lay back snaps.

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arse

noun

A person’s buttocks or anus.

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