A fourth part of the coin called an as. See 3d As, 2.
The fourth of a penny; a farthing. See Cur.
A Roman coin worth about 1/64 of a denarius. A denarius is about one dayâ€(tm)s wages for an agricultural laborer.
A copper coin worth a quarter of an as. This was really small change. The plural is "quadrantes."
The Roman 4th part of the bronze "AS."
The quadrans (literally meaning "a quarter") was a low-value Roman bronze coin worth 1/4th of an as. The quadrans was issued from the beginning of cast bronze coins during the Roman Republic with three pellets (representing three unciae) as a mark of value. The obverse type, after some early variations, featured the bust of Hercules, while the reverse featured the prow of a galley.