scrounger

Concise Oxford English Dictionary © 2008 Oxford University Press:
scrounge /skraʊnʤ/ informal

▶verb seek to obtain (something) at the expense of others or by stealth.

■ (often scrounge something up) N. Amer. search for or obtain by searching.

▶noun an act or the action of scrounging.

– derivatives
scrounger noun.

– origin early 20th cent.: var. of dial. scrunge ‘steal’.