ˀadr - wonderful, magnificent, strong, of good quality
(DUL 20)
PC
*ˀdr - to be great, strong, magnificent
(Kogan 2015: 280)
Cf. perhaps Tna. ˀaddärä ‘to heap up, to amass, to collect’
(TED 1530), which would point to PWS *ˀdr ‘to be massive.’ In DRS 10, PC *ˀdr is compared to Arb. ˀudrat- ‘scrotal hernia’