A curve upon which a body moving under gravity or another force will reach the lowest point (or some other fixed point) in the same amount of time, regardless of the point from which it starts.
Today’s NYT Connections Answers Apr 25, #319 - Daily Updates & Hints
Today’s Wordle Answer Apr 25 #1041- NYT Wordle Hints & Updates
NYT Mini Crossword Answers Today - The Mini for Apr 25 Solved
NYT Strands Today - Hints, Spangram & Answers for April 25