scavenge-v; 2 Senses

Sense Number 1: Clean refuse or discarded items from; look for something, not necessarily food.

John scavenged the dating scene for remnants of love.
She scavenged the garbage cans for food.
Workers scavengers for radioactive contaminants.

VerbNet: search-35.2
FrameNet: NP
PropBank: scavenge.01
WordNet 3.0 Sense Numbers: 1, 2, 4

Sense Number 2: Feed on carrion or refuse, as an animal.

Hyenas scavenge at night.
Mice scavenged the kitchen for scraps.

VerbNet: NM
FrameNet: NP
PropBank: NM
WordNet 3.0 Sense Numbers: 3