1. A long, loose outer garment, usually having a hood and no sleeves.
2. Something that covers or conceals: a cloak of secrecy.
tr.v. cloaked, cloak·ing, cloaks
[Middle English cloke, from Old North French cloque, cloak, bell (from its shape), from Medieval Latin clocca; see CLOCK1.]
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.