'Reefer' definitions:

Definition of 'reefer'

From: WordNet
noun
Marijuana leaves rolled into a cigarette for smoking [syn: joint, marijuana cigarette, reefer, stick, spliff]

Definition of 'Reefer'

From: GCIDE
  • Reefer \Reef"er\ (r[=e]f"[~e]r), n.
  • 1. (Naut.) One who reefs; -- a name often given to midshipmen. --Marryat. [1913 Webster]
  • 2. A close-fitting jacket or short coat of thick cloth. [1913 Webster]
  • 3. A marijuana cigarette. [Slang] [1913 Webster]

Synonyms of 'reefer'

From: Moby Thesaurus