cross·hair 
/ˈkrɑ:sˌheɚ/ noun
plural cross·hairs /ˈkrɑ:sˌheɚ/ noun [count] : 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
in the crosshairs
: being aimed at by a gun (such as a rifle) that has an aiming device with crosshairs — often used figuratively ▪ The senator's voting record was in the crosshairs of his political rivals. [=was being targeted by his political rivals]
