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upside the head

idiom

Definition of upside the head

US, informal
: on the side of one's head
  • She smacked him upside the head.

Word by Word Definitions

upside play

  1. : an upward trend (as of prices)

  2. : a positive aspect

  3. : promise, potential

  1. : up on or against the side of

See the full definition of upside

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