Answer: gnomon

AnswerCrossword Clue
GNOMONPart of a sundial that casts a shadow
gnomon(formerly) the part of a parallelogram that remains after a similar parallelogram has been taken away from one of its corners
gnomoncolumn or shaft erected perpendicular to the horizon
gnomonearly astronomical instrument consisting of a vertical shaft, column, or the like, for determining the altitude of the sun or the latitude of a position by measuring the length of its shadow cast at noon
gnomonthe raised part of a sundial that casts the shadow; a style
gnomonan object that by the position or length of its shadow serves as an indicator especially of the hour of the day as
gnomonthe pointer of a sundial
GNOMONSundial part
GNOMONSundial's essential part
GNOMONSundial pointer
GNOMONEarly astronomical instrument
GNOMONSundial style
GNOMONPart of a sundial.
GNOMONPin of a sundial.
GNOMONSundial shadow-caster
GNOMONSundial's shadow caster
GNOMONSundial's shadow-caster