Pronunciation: - ˌ her
Function: noun
Date: circa 1884
: 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 (as on a rifle) having crosshairs <capital punishment ⋯ is in the crosshair s this political season ― J. H. Alter>