Yes! Your word expedition starts here.

gnomon

a pointer on a sundial; a vertical column

Sightings:

Dolmens, menhirs, and gnomons -- oh my

So you won't be late for your science class

Better than moss on a tree

Moved by the light

Astronomy with a stick (who needs Hubble anyway?)

So you won't be late for the bar exam

A shadow-keeper

Clock like an Egyptian

Outdoor projects from Missouri Conservation

An illuminating moment in a Florence cathedral

In geometry : what remains of a parallelogram after a similar parallelogram containing one of its corners is removed

Euclidean geometry you can click and drag (wait for them to load)

.