noun
also gunter
( -s )
Etymology: after Edmund Gunter died 1626 English mathematician; from its resemblance to an instrument used in making mathematical calculations according to a system devised by Gunter
: a rig used on a small sailing boat consisting of an upper mast stepped in a gunter iron and moved up or down on a lower mast and supporting a yard to which is laced a triangular sail — called also sliding gunter