neuter
Aṭṭāna at Vin II 106 is obscure, should it not rather be read with Buddhaghosa as aṭṭhāna? (cf. Buddhaghosa on page 315).
a rubbing board?; a post incised with squares and used as a scrubber by bathers
【中】沐浴者用來搓澡的一種被切成四方形的柱。
(nt, nt) post incised with squares and used as a rubber by bathing people