Is bamboo a hardwood

Bamboo is a member of the grass family, so it isn't a hardwood in the sense of a maple or oak tree.

However, because bamboo is very wood-like it can be cut into long, narrow planks which are laminated together into larger boards. Wood made this way can be used from construction-grade plywood, thicker furniture grade plywood, and flooring.

Wood made from bamboo is hard, harder than oak, and so wood made from bamboo can be considered a hardwood in the way a maple or oak wood board is considered hardwood.