Dictionary

backside

noun back·side \-ˌsīd\

: the part of the body that a person sits on

Full Definition of BACKSIDE

:  buttocks —often used in plural
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First Known Use of BACKSIDE

circa 1500

Related to BACKSIDE

BACKSIDE Defined for Kids

backside

noun back·side \ˈbak-ˌsīd\

Definition of BACKSIDE for Kids

1
:  rump 1 <… the black pup came toward her, his fat backside swinging as he trotted … — Jean Craighead George, Julie of the Wolves>
2
:  the part of the body on which a person sits
Medical Dictionary

backside

noun back·side \-ˌsīd\

Medical Definition of BACKSIDE

:  buttocks—often used in plural

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