'Free-swimming' definitions:

Definition of 'free-swimming'

(from WordNet)
adjective
(of animals) able to swim about; not attached [syn: free-swimming, unattached]

Definition of 'Free-swimming'

From: GCIDE
  • Free-swimming \Free"-swim`ming\, a. (Zool.)
  • 1. Swimming in the open sea; -- said of certain marine animals. [1913 Webster]
  • 2. (Zoology) able to swim about; not attached to a stationary object; -- of aquatic animals. [WordNet sense 1]
  • Syn: unattached. [WordNet 1.5]