From WordNet (r) 2.0 (August 2003) [wn]:
fluent
adj 1: easy and graceful in shape; "a yacht with long, fluent
curves"
2: smooth and unconstrained in movement; "a long, smooth
stride"; "the fluid motion of a cat"; "the liquid grace of
a ballerina"; "liquid prose" [syn: flowing, fluid,
liquid, smooth]
3: expressing yourself readily, clearly, effectively; "able to
dazzle with his facile tongue"; "silver speech" [syn:
eloquent, facile, silver, silver-tongued,
smooth-spoken]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Fluent \Flu"ent\, a. [L. fluens, -entis, p. pr. of fluere to
flow; cf. Gr. ? to boil over. Cf. Fluctuate, Flux.]
1. Flowing or capable of flowing; liquid; glodding; easily
moving.
[1913 Webster]
2. Ready in the use of words; voluble; copious; having words
at command; and uttering them with facility and
smoothness; as, a fluent speaker; hence, flowing; voluble;
smooth; -- said of language; as, fluent speech.
[1913 Webster]
With most fluent utterance. --Denham.
[1913 Webster]
Fluent as the flight of a swallow is the sultan's
letter. --De Quincey.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Fluent \Flu"ent\, n.
1. A current of water; a stream. [Obs.]
[1913 Webster]
2. [Cf. F. fluente.] (Math.) A variable quantity, considered
as increasing or diminishing; -- called, in the modern
calculus, the function or integral.
[1913 Webster]