scavenged

verb

1. 1

   To collect and remove refuse, or to search through refuse, carrion, or abandoned items for useful material

2. 2

   To remove unwanted material from something, especially to purify molten metal by removing impurities

3. 3

   To expel the exhaust gases from the cylinder of an internal combustion engine, and draw in air for the next cycle

4. 4

   To feed on carrion or refuse