For the noun: tobacco
Plural form: tobaccos, tobaccoes

WordReference Random House Learner's Dictionary of American English © 2015
to•bac•co /təˈbækoʊ/USA pronunciation n., pl. -cos, -coes.
  1. Plant Biology[uncountable] a plant of the nightshade family whose leaves are prepared for smoking.
  2. the prepared leaves of this plant, as used in cigarettes, cigars, and pipes: [uncountable]The smell of tobacco hung in the room.[countable]different tobaccos for different blends.
to•bac•co•less, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::

tobacco /təˈbækəʊ/ n ( pl -cos, -coes)
  1. any of numerous solanaceous plants of the genus Nicotiana, having mildly narcotic properties, tapering hairy leaves, and tubular or funnel-shaped fragrant flowers. The species N. tabacum is cultivated as the chief source of commercial tobacco
  2. the leaves of certain of these plants dried and prepared for snuff, chewing, or smoking
Etymology: 16th Century: from Spanish tabaco, perhaps from Taino: leaves rolled for smoking, assumed by the Spaniards to be the name of the plant

toˈbaccoless adj

'tobacco' also found in these entries:

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