a common American plant, Lobelia inflata, of the lobelia family, having small, blue flowers and inflated capsules.
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British Dictionary definitions for Indian tobacco
a poisonous North American campanulaceous plant, Lobelia inflata, with small pale blue flowers and rounded inflated seed capsules
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012