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Webster 1913 Edition
Flyboat
Fly′boatˊ
,Noun.
 [
Fly 
+ boat
: cf. D. vlieboot
.] 1. 
(Naut.) 
A large Dutch coasting vessel. 
 Captain George Weymouth made a voyage of discovery to the northwest with two 
flyboats
. Purchas.
2. 
A kind of passenger boat formerly used on canals. 
Webster 1828 Edition
Flyboat
FLYBOAT
,Noun.