Meaning of jumbo

jum•bo

Pronunciation: ( jum'bō), [key]
— n., pl. adj. -bos,
—n.
  1. a very large person, animal, or thing.
  2. See
    1. a forestaysail having a boom(jum&prim;bo boom&sec;)along its foot, used esp. on schooners.
    2. a sail used in place of a course on a square-rigged ship, having the form of an isosceles triangle set apex downward.
    3. a narrow triangular sail set point downward in place of a foresail on a topsail schooner.
—adj.
  1. very large: the jumbo box of cereal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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