This clue appeared in the NYT Crossword on Monday, December 8, 2025 (22 Across). The answer is hidden below until you want it. Monday puzzles are the easiest of the week, so the clue is likely a plain definition.
Answer length: 6 squares
First letter
P _ _ _ _ _
First and last letters
P _ _ _ _ N
Show the answer
About the answer
PISTON as a word: (mechanics) A solid disk or cylinder that fits inside a hollow cylinder, and moves under pressure (as in an engine) or displaces fluid (as in a pump); (music) A valve device in some brass instruments for changing the pitch.
PISTON has been an answer once in the NYT Crossword and Mini puzzles we have on file, which go back to October 23, 2025.
More clues from this puzzle
- Wyoming skiing mecca (17 Across)
- Female pig (19 Across)
- Gold, in Spanish (20 Across)
- Dessert with icing (21 Across)
- Run out of clothes? (24 Across)
- Like an envelope that's ready to be sent (26 Across)
- ___ Major (constellation) (28 Across)
- "Enola Holmes" actress ___ Bobby Brown (30 Across)
Play today's NYT Crossword at The New York Times
All crossword clues · Today's NYT Crossword answers · Today's Mini answers