Crossword Genius

Basic flotation device (4)

Ross

I believe the answer is:

raft

(Other definitions for raft that I've seen before include "Vehicle" , "A whole lot" , "Flat structure for travel over water" , "Flat, floating platform" , "Wooden craft" .)

I've seen this clue in the Universal.
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.