To save this word, you'll need to log in.
Definition of mother-in-law apartment
US
: a small apartment that is part of or next to a house and that is used especially as a place for an older relative to live
Comments on mother-in-law apartment
What made you want to look up mother-in-law apartment? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Original Meanings Quiz
- Which of the following is the earliest known sense of the word awe?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Share mother-in-law apartment