The word 'stoner' is a modern English compound formed from the native word 'stone' and the agent suffix '-er'. Its primary meaning derives not from the literal object but from mid-20th century slang, where "stoned" described the insensible or dazed state induced by drugs or alcohol, metaphorically akin to being hit by a stone. This slang usage transformed 'stone' into a verbal concept of inducing numbness, to which '-er' was appended to label the person who habitually experiences that state. Consequently, the term evolved from its literal roots denoting a thrower of stones to its contemporary abstract meaning identifying a habitual cannabis user.

Structure: stone (to throw stones, to make numb) + er (agent noun suffix) - stone: From Old English stān (rock, stone). In this compound, it draws from the verb sense "to pelt with stones" or the later slang sense "to make numb or insensible," related to the effect of drugs. - er: A native English agent suffix, from Old English -ere, used to form nouns denoting a person associated with an action or thing.