scavenge
verb- [transitive, intransitive]
(of a person, an animal or a bird )人、獸或鳥 to search through waste for things that can be used or eaten (從廢棄物中)覓食;撿破爛;拾荒 - [transitive, intransitive]
(of animals or birds )獸或鳥 to eat dead animals that have been killed by another animal, by a car, etc. 吃(動物屍體)
Word Originmid 17th cent. (in the sense ‘clean out (dirt)’): back-formation from scavenger.