quinzeno

Old Spanish

**Old Spanish ordinal numbers**
< 14º	15º	16º >
Cardinal : quinze Ordinal : quinzeno Adverbial : quinze vezes

From quinze (“fifteen”) +‎ -eno.

quinzeno m (feminine quinzena, masculine plural quinzenos, feminine plural quinzenas)

fifteenth
- c. 1250, Alfonso X, Lapidario, f. 15v:
  Del quinzeno grado del ſigno de tauro es la piedra que pareſce enla mar quando ſube la planeta uenus.
  Of the fifteenth degree of the sign of Taurus is the stone that appears in the sea when the planet Venus rises.