Argobba

əṭa - lot (CDG 57)

PES
*ˁiṣ̂ṣ̂-/*ˁinṣ̂- - lot, die (for playing dice) (SED I 25)
May be related to PWS *ˁVṣ̂ā/īṣ̂- ‘(kind of) bone’ (for this meaning shift, cf. Rus. кость meaning both ‘bone’ and ‘playing die’).