Pickeer \Pick*eer"\, v. i. [imp. & p. p. {Pickeered}; p. pr. & vb. n. {Pickeering}.] [F. picorer to go marauding, orig., to go to steal cattle, ultimately fr. L. pecus, pecoris, cattle; cf. F. picor['e]e, Sp. pecorea robbery committed by straggling soldiers.] To make a raid for booty; to maraud; also, to skirmish in advance of an army. See {Picaroon}. [Obs.] --Bp. Burnet. [1913 Webster]