Nounmat (made of pieces of split bamboo or reeds tied together)

Nounbamboo door; door or screen made of fine bamboo strips, allowing air to pass through

Noundrainboard; floor grates; duckboard; slatted wood (e.g. used as a base for storing futons inside a cupboard)

Nounwrapping (something) in a bamboo mat · wrapping someone in a bamboo mat and throwing them into a river (unofficial Edo-period punishment)