Short for Bleomycin, one of the widest spread drugs used as part of chemotherapy against certain forms of cancer
Gotta take my weekly dose of Bleo
(noun) - a hollowed out philly blunt filled with weed.
(verb) - to smoke a weed.
- to be really high
Hey man you got some bleo in your room?
Its 4:20 lets bleo.
I need to sit down and bleod.