Exact historical dictionary sense
Tank in Webster's 1913 dictionary
The 1913 record labels tank as noun. Its source-bounded etymology and selected historical definition appear below.
[Pg. tanque, L. stangum a pool; or perhaps of East Indian origin. Cf. Stank, n.]
Cross-verified historical senseIn Webster's Revised Unabridged Dictionary (1913), "tank" is labeled noun. Its etymology is recorded as: "[Pg. tanque, L. stangum a pool; or perhaps of East Indian origin. Cf. Stank, n.]" The selected historical definition says: "A large basin or cistern; an artificial receptacle for liquids."