retread

Short definition from Wiktionary

Verb

1. 1
   To replace the traction-providing surface of a vehicle that employs tires, tracks or treads.
2. 2
   To renew the tread of a tyre, providing a cheaper alternative to buying a new tyre, but potentially introducing a risk of premature failure if performed improperly.
3. 3
   To tread again, to walk along again, to follow a path again.

Noun

1. 1
   A used tire whose surface, the tread, has been replaced to extend its life and use.
2. 2
   A person who re-entered military service in World War II after serving in World War I.
3. 3
   A return over ground previously covered; a retraversal or repetition.