Usage patterns
畳を敷くto lay down tatami mats
We laid new tatami mats in this room.
〈数〉畳の部屋a room of a given tatami-mat size
My room is a six-tatami-mat Japanese-style room.
畳の上に寝るto lie down on the tatami
I was tired, so I lay down on the tatami.
畳を替えるto replace tatami mats
We replaced the worn-out tatami mats with new ones.
Expressions
畳の目mesh of a tatami mat; stitch spacing on tatami