Herm - Phallic Herm Statue of Hermes

Herm
Description of the term herm, as used in the ancient world.

Hermes
Encyclopedia Mythica article on Hermes says his name comes "from herma, the plural being hermai, herm was a square or rectangular pillar in either stone or bronze, with the head of Hermes (usually with a beard), which adorned the top of the pillar, and male genitals near to the base of the pillar."