stick up

Short definition from Wiktionary

Verb

1. 1
   Used other than figuratively or idiomatically: see stick, up. To put or post up by sticking.
2. 2
   To rob at gunpoint.
3. 3
   To be prominent; to point upwards.
4. 4
   To speak or act in defence (of).
5. 5
   To defy, to confront, to stand up to.
6. 6
   To maintain a commitment (as, to a proposition or role)

Noun

1. 1
   Alternative form of stickup.