Longman Dictionary of Contemporary English homepage

Date: 1400-1500
Origin: pad (of unknown origin) + lock

padlock

 noun
     
padlock
Related topics: Daily Life, Technology
pad‧lock [countable]
TD a lock that you can put on a gate, door, bicycle etc:
He undid the padlock and eased back the lid.
—padlock verb [transitive]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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