Mission involving Spirit and Opportunity, in brief (3)
I believe the answer is:
mer
(Other definitions for mer that I've seen before include "Mal de - - , seasickness" , "A French sea" .)
I've seen this clue in The New York Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.