checkbox
noun[C]
USuk/ˈtʃekbɒks/us(UKtick box)asmallboxon apaperformto put acheckmarkin:
Theyvoicedconcernsaboutproblemswith thecitizencheckbox on voter-registrationforms.
IT
asmallboxon acomputerscreenthat youclickon to show achoice, toopenorcloseafile, etc.:
Topreventaprogramfromstartingup,clearthecheckboxnext to it,clickOK, andreboot.