Uncoupling

noun, verb

Definitions

Noun
  1. 1
    The act by which persons or things are uncoupled.

    "It is the first British yard in which every activity of hump marshalling, except for the driving of the hump locomotive and the uncoupling and coupling of wagons, is fully automatic or drastically simplified by modern aids."

Verb
  1. 1
    present participle and gerund of uncouple form-of, gerund, participle, present

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