Green’s Dictionary of Slang

clavo n.

[Calo clavo, a thief]

1. (US prison) a hiding place.

[US]E. Bunker Animal Factory 23: Stand point a minute, will you, Buzz? I went to check a clavo.
[US]Other Side of the Wall: Prisoner’s Dict. July 🌐 Clavo: A stash or collection. ‘He has a huge clavo of jelly-beans.’.
[US]Prison Slang Mommyblogger mydogharriet.blogspot.com 23 Sept. 🌐 So your shortie jacked some wham whams from her ace-duces clavo?

2. (US prison) a prisoner who is in possession of something valuable, esp. drugs.

[US]Bentley & Corbett Prison Sl. 52: Clavo Someone who is ‘holding the bag’ or the ‘dope sack.’ Can also be used to mean holding anything of value, i.e., money, jewels, etc.

3. (US campus) drugs.

[US]Da Bomb Summer Supplement 4: Clavo (n.) Spanish slang. Drugs.