Meaning

verb kill by throwing stones at

verb remove the pits from

adjective under the influence of narcotics

originFrom Middle English stoned (simple past) and stoned, istoned (past participle), equivalent to stone + -ed. The etymology for the sense of "exhilarated, intoxicated by substances", which originated in American English in the mid-20th century, is not fully clear. It could be derived from stone drunk, a common slang expression from the mid-19th to early-20th century. It is more frequently theorized…

Etymology from Wiktionary, CC BY-SA 3.0