verb, -enged, -eng⋅ing.| 1. | to take or gather (something usable) from discarded material. |
| 2. | to cleanse of filth, as a street. |
| 3. | to expel burnt gases from (the cylinder of an internal-combustion engine). |
| 4. | Metallurgy. to purify (molten metal) by introducing a substance that will combine chemically with impurities. |
| 5. | to act as a scavenger. |
| 6. | (of an engine or cylinder) to become scavenged of burnt gases. |
| 7. | to search, esp. for food. |