treas·ur·er 
(trĕzhər-ər)
(trĕzhər-ər)n.
One who has charge of funds or revenues, especially the chief financial officer of a government, corporation, or association.
[Middle English tresurer, from Anglo-Norman tresorer, from Late Latin thēsaurārius, from Latin, of treasure, from thēsaurus, treasure; see TREASURE.]