Where does “balsa” come from?

balsa (Irish) comes from English balsa, from Spanish balsa — pool; raft; ferry.

balsa (Irish): balsa

Definitions

Step	Language	Word	Meaning
1	English	balsa	A large tree, Ochroma pyramidale, native to...
2	Spanish	balsa	pool; raft; ferry

balsa — Etymology, Origin & Word History | Etymology Explorer