undockPronunciation: /ʌnˈdɒk/Definition of undock verb [with object] 1separate (a spacecraft) from another in space: Conrad undocked Gemini and used his thruster to back slowly away 2take (a ship) out of a dock: (as noun undocking)Baylor followed the undocking with interestundock in other Oxford dictionaries Definition of undock in the US English dictionary