Real Dictionary

fleet
countable noun: A fleet is a group of ships organized to do something together, for example to fight battles or to catch fish.
countable noun: A fleet of vehicles is a group of them, especially when they all belong to a particular organization or business, or when they are all going somewhere together.

fleet in American English 1
a number of warships under one command, usually in a definite area of operation
noun: the largest organized unit of naval ships grouped for tactical or other purposes

fleet in American English 2
to float; swim
to pass away (time)
adjective: swift; rapid
intransitive verb: to move swiftly; fly
transitive verb: to cause (time) to pass lightly or swiftly

fleet in American English 3
a small inlet; creek
noun: an arm of the sea; inlet

Fleet in British English
noun: a stream that formerly ran into the Thames between Ludgate Hill and Fleet Street and is now a covered sewer

fleet in British English 1
noun: a number of warships organized as a tactical unit

fleet in British English 2
adjective: rapid in movement; swift
verb: to move rapidly

fleet in British English 3
noun: a small coastal inlet; creek