Vas | Webster's Dictionary of the English Language

vas
văs, vădis, m., I a bail , security , surety (in gen., while praes is confined to pecuniary matte...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
vas
vas (1) vadis, m a bail, security, surety: vas factus est alter (Damon) eius sistendi, ut si ille n...

An Elementary Latin Dictionary