teruncius

Noun

 * 1)  An ancient Roman coin worth one quarter of an as.

Etymology
Substantivisation of the otherwise-unattested adjective in elliptical use for the phrase, the adjective deriving from.

Noun

 * 1) a bronze coin valued at three unciae  one-quarter of an , a “”
 * 2)  something of negligible value, a
 * 3)  a fourth part, a