/ Dictionary / Index S seaplane: Meaning and Definition of Find definitions for: sea•plane Pronunciation: (sē'plān"), [key] — n. an airplane provided with floats for taking off from or landing on water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: seaplane (Thesaurus) sea pink sea-poacher Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language