the movement of liquid or air back in the direction it was flowing from
when filling the tank, use an anti-siphon device to prevent backflow
the valves prevent backflow of blood into the veins
Today’s NYT Connections Answers Apr 24, #318 - Daily Updates & Hints
Today’s Wordle Answer Apr 24 #1040- NYT Wordle Hints & Updates
NYT Mini Crossword Answers Today - The Mini for Apr 24 Solved
NYT Strands Today - Hints, Spangram & Answers for April 24