- the raised part of a sundial that casts the shadow; a style.
- an early 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.
- (formerly) the part of a parallelogram that remains after a similar parallelogram has been taken away from one of its corners.
- the stationary arm that projects the shadow on a sundial
- a geometric figure remaining after a parallelogram has been removed from one corner of a larger parallelogram
