in one's head

Definition of in one's head

  1. :  without needing to write anything down :  mentally She did some quick calculations in her head.

Word by Word Definitions

headplay
  1. :  the upper or anterior division of the animal body that contains the brain, the chief sense organs, and the mouth

    :  the seat of the intellect :  mind

    :  a person with respect to mental qualities

  1. :  of, relating to, or intended for the upper or anterior division of the animal body that contains the brain, the chief sense organs, and the mouth :  of, relating to, or intended for the head (see 1head 1)

    :  principal, chief

    :  located at the end that is upper or higher :  situated at the head (see 1head 5a)

  1. :  behead

    :  to put the striking part of a weapon, tool, or implement on :  fit a head (see 1head 9b) to

    :  to form the uppermost extremity or projecting part of :  to form the head or top of


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