We don't have synonyms for skags yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are skag, sags and snags.
(n) :
(slang) Alternative spelling of scag (“heroin”). [(slang, uncountable) Heroin.]
(n) :
(nautical) Alternative form of skeg. [(nautical) A fin-like structure to the rear of the keel of a vessel that supports the rudder and protects a propeller.]
(n) :
(slang) Alternative spelling of scag (“heroin”). [(slang, uncountable) Heroin.]
(n) :
(nautical) Alternative form of skeg. [(nautical) A fin-like structure to the rear of the keel of a vessel that supports the rudder and protects a propeller.]