pickeer
verb
pick·eer pi-ˈkir 
pickeered; pickeering; pickeers
intransitive verb
archaic
: to skirmish in advance of an army
also : scout, reconnoiter
Word History
Etymology
probably modification of French picorer to maraud, perhaps from Middle French pecore sheep, from Old Italian pecora — more at pecorino
First Known Use
1644, in the meaning defined above