a rod used in glassmaking to hold the glass while it was being worked on; may leave a mark on the glass called a pontil mark

An iron rod used in glassmaking. With a small lump of molten glass on the end, the pontil was stuck to an article while the blowing iron was removed. When the pontil was finally broken away, it would leave a scar, called the pontil mark.

Solid iron rod used to hold the glass after being transferred from the blowing iron.

a circular area on the very bottom of a bottle

an iron rod used for gathering glass.

a long solid or hollow rod used to hold the bottle during the finishing process. IGCB

A solid metal shaft which adheres to molten glass providing the glass worker with a handle with which to physically shape and work the glass