A detachable lock with a U-shaped bar hinged at one end, designed to be passed through the staple of a hasp or a link in a chain and then snapped shut.
tr.v. pad·locked, pad·lock·ing, pad·locks
To lock up with or as if with a padlock.
[Middle English padlok : pad-, of unknown meaning + lok, lock; see LOCK1.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.