1. a stool or stand (as ādhāra²) (always m., except at Ja.i.33 where ˚āni pl. nt.) Ja.i.33; Dhp-a.iii.290 = Vv-a.220; Dhp-a.iii.120 = Dhp-a.iii.186 (one of the four priceless things of a Tathāgata, viz.: setacchattaṃ, nisīdanapallanko, ādhārako pādapīṭhaṃ).
2. a reading desk, pulpit Ja.iii.235 Ja.iv.299.

ā + dhāraka, or simply ādhāra + ka