Definition of treasury:

part of speech: noun

A place or building in which stores of wealth are reposited; a department of Government where the public money is received, kept, and disbursed; all the officers connected with the department; an abundant store.

Usage examples:

Word of the day

ronde bosse

In arch., a term applied to sculptured objects in their full forms, in contradistinction to those which are in relief, or attached more or less to a plane or ground. ...