Danish slang term for cannabis for joints. The term was invented by danish rock band Gasolin' in the seventies, because they needed a secret word for cannabis that they could say out loud without being understood by stangers. They were inspired by a faroese ship named Tjaldur, that was docked in Copenhagen at the time. (Tjaldur is the faroese word for an oystercatcher, the national faroese bird.)
Today 'tjald' is a very common name for cannabis in Denmark, closely connected to hippie and smoker-cultures. It is also quite handy to have in mind as a foreginer, when visiting Denmark.
- Dude, wanna smoke some tjald?
- Sure, let's do it.