guard lock

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guard lock

[′gärd ‚läk]

(civil engineering)

entrance lock

(engineering)

An auxiliary lock that must be opened before the key can be turned in a main lock.

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References in periodicals archive ?

"The East Guard Lock is a well-known landmark on the Erie Canal in Rochester and ensuring its upkeep is a top priority," Canal Corp.

Erie Canal lock to get $6 million rehab here

BOC-Naia district collector Carmelita Talusan said that 20 rifle hand guards and six hand guard locks were found inside a package from Shanghai, China.

News Briefs: Aug. 25, 2019

AN investigation has been launched into claims that a security guard locked a homeless man's sleeping bag in a bin overnight, leaving him "blue with cold".

Probe into claim homeless man's sleeping bag was locked in a bin

They immediately shut the door and went inside while the guard locked the main armoured gate, according to the police investigators.

Leader of banned BLA among 13 booked for consulate attack

Resistance will be felt before the guard locks indicating a tight fit.

The M1 Garand: maintenance & repair: Part 3: restocking your rifle will gain you accuracy and style points

"After the terrorists stormed the district courts, the judge, his reader, a court clerk and the guard locked themselves inside the retiring room of the judge.

Judge Awan killed by guard: Nisar

The barrel's integral gas block dovetails around the front end of the slide, and a rotating lever located in the frame just above the front of the trigger guard locks the rear of the barrel solidly into place in a mortise inside the frame.

The Desert Eagle .50 action express is the most powerful semiauto around, and now it's bigger

After entering the classroom at Sing-Sing, the guard locked the door, and I would not see him again until the class ended when he came back to unlock the door.

My prison education: even when bodies are locked up behind bars, minds can still breathe free

In prison the guard locks and unlocks all the doors for you, but at work you must often carry a security card and open all the doors for yourself.

Behind bars

CLOSING: A security guard locks the factory gates, right; and above, the BPI factory in Stockton Picture by IAN COOPER