release cock

noun

A valve; one application was for opening train doors in an emergency.

Meanings

nounrelease cock (plural release cocks)

plural release cocks

  1. A valve; one application was for opening train doors in an emergency.

    Release cocks are fitted adjacent to each door both on the inside and outside of the car for use in an emergency, or for entry of depot staff.

    1958 April 29, “Diesel Railbus for British Railways”, in Railway Magazine, page 277
Cite this entry
APA

release cock. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/release%20cock

MLA

“release cock.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/release%20cock. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “release cock,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/release%20cock.

Source: release cock on Wiktionary, CC BY-SA 4.0.