WordReference Random House Unabridged Dictionary of American English © 2020
bulb•let  (bulblit),USA pronunciation n. [Bot.]
  1. Plant Biologya small bulb or bulblike structure, esp. one growing in the axils of leaves, as in the tiger lily, or replacing flowers, as in the onion. Also called  bulbil. 
  • bulb + -let 1835–45

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