crosshair

noun cross·hair \ ˈkrȯs-ˌher \

Definition of crosshair

:a fine wire or thread in the focus of the eyepiece of an optical instrument used as a reference line in the field or for marking the instrumental axis used figuratively to describe someone or something being targeted as if through an aiming device having crosshairs
  • … in the crosshairs this political season
  • —J. H. Alter

Recent Examples of crosshair from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'crosshair.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of crosshair

circa 1884



CROSSHAIR Defined for English Language Learners

crosshair

noun

Definition of crosshair for English Language Learners

  • : a very thin wire or thread that is seen when you look into a microscope, telescope, etc., and that is used for precisely viewing or aiming at something


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