What is "easers"

Usage examples of "easers".

The same women that despised Sky Eyes, that gossiped about her and futilely forbade their sons to come near her, they came for abortifacients, joint easers, the silvery drink that brought one out of a dark mood, a dozen other things.

A moment's respite with the dust and nitrous fumes swirling back down the drive, then a roar as the easers on each side shaped the hole.