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Webster 1913 Edition

Verb.

[1st pref.

un-

dock

(Naut.)

To take out of dock;

as, to

undock

a ship

Verb.

To take out of dock; as, to undock a ship.

undock ‎(third-person singular simple present undocks, present participle undocking, simple past and past participle undocked)

(transitive) To remove a ship from a dock.
(transitive, computing) To remove from a docking station.
After I undock my laptop, I can run it for about six hours on battery power.
(transitive, computing) To drag a user interface element (such as a toolbar) away from its fixed position so that it floats freely.