penthouse
pent·house
noun
Origin
From Anglo-Norman pentiz (“pentice”), from apendiz (“appentice”), ultimately from a suffixed form of Latin appendō (“to append”). Altered by folk etymology to appear to be a compound of house. Doublet of appentice and pentice.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.