pickeer

To serve in irregular or skirmishing warfare; form part of a body of skirmishers acting in the front or on the wings of an army, or independently, as foragers, etc.; act as a skirmisher.

intransitive verb

To make a raid for booty; to maraud; also, to skirmish in advance of an army. See picaroon.

verb

To make a raid for booty; to maraud.

verb

To skirmish in advance of an army.