PHRASAL VERB 把(香烟)掐灭;捻灭,熄灭(香烟) When someone stubs out a cigarette, they put it out by pressing it against something hard. 把(香烟)掐灭;捻灭,熄灭(香烟) [Also VERB n PREPOSITION]
Signs across the entrances warn all visitors to stub out their cigarettes. [VERBPREP. noun]