Cooper \Coop"er\, v. t. [imp. & p. p. {Coopered}; p. pr. & vb. n. {Coopering}.] To do the work of a cooper upon; as, to cooper a cask or barrel. [1913 Webster]
Coopering \Coop"er*ing\, n. Work done by a cooper in making or repairing barrels, casks, etc.; the business of a cooper. [1913 Webster]