ree ‧ fer /ˈriːfə $ -ər/ BrE AmE noun [countable] old-fashioned
[ Date: 1900-2000 ; Origin: Perhaps from ⇨ ↑ reef 2 (in the sense 'to roll something up' ), or perhaps from Mexican Spanish grifo '(someone who smokes) marijuana' ]
a cigarette containing the drug ↑ marijuana SYN joint