tobacco /ta'baeksu; ta'baeko/ n [U] (plant having) leaves which are dried, cured and used for smoking (in pipes, cigars, cigarettes) or as snuff; (pl, for kinds of ~ leaf): 煙草; 煙葉; (復(fù)數(shù)指各種煙葉)： This is a mixture of the best ~s. 這足由各種最好的煙葉配制成的。 ~mist /ta'baekomst; ta'baekanist/ n dealer in ~. 煙草商。