榻
トウ, こしかけ, しじ

chair

JLPT0 G13 S0 F5000

The right-hand element# is a variant of 習 (press flat). 榻 adds 木 tree/wood → press the body flat on a *sleeping pallet* → *lounge*; *bed*. Compare 爿.

[Full Kanji Etymology List]