green dragon

Short definition from Wiktionary

Noun

1. 1
   Any of several plants in the family Araceae: in species Arisaema dracontium, of North America.
2. 2
   Any of several plants in the family Araceae: in genus Pinellia of eastern Asia.
3. 3
   Pitaya or dragon fruit, of genus Stenocereus.
4. 4
   A tincture of cannabis, typically made by soaking the flowers, leaves, or stems in ethyl alcohol.
5. 5
   Used other than figuratively or idiomatically: see green, dragon.