balsa
/ˈbalsa/ · B2 · noun · f
balsa
🛶 balsa = a raft; sounds like ball-sa, a ball of logs floating along
Say it as BALL-sa: a ball-light, buoyant thing. Balsa wood is famously the lightest timber, which is why it was used to build rafts, and the same word names the raft, the ferry and the tree itself.