re-up

Etymology 1
"Reenlist" sense is a possible

Verb

 * 1)  To reenlist.
 * 2)  To sign up again.
 * 3)  To renew (e.g. a library book, a lease, a contract).
 * 1)  To renew (e.g. a library book, a lease, a contract).

Noun

 * 1)  One who reenlists.

Verb

 * 1)  To renegotiate a contract.
 * 2)  To refill one's drug stash.
 * 3)  To take another dose.

Noun

 * 1)  A resupply of a batch of drugs to be sold on the street.