check rail
or check·rail
noun
(in a window sash) a meeting rail, especially one closing against the corresponding rail with a diagonal or rabbeted overlap.
Compare
plain rail.
Origin of check rail
First recorded in 1875–80
Words nearby check rail
check off,
check on,
check out,
check over,
check protector,
check rail,
check up,
check valve,
check-in,
check-over,
checkable