siliqua

Noun

 * 1) A weight of four grains; a carat.
 * 1) A weight of four grains; a carat.

Etymology
. Often related to, but De Vaan suggests a relationship with instead on the grounds of the unusual suffix and closer semantics. Likely of origin.

Noun

 * 1) pod (of a pea or bean plant)
 * 2) A small coin, one twenty-fourth of a solidus