Comments: Av. has a suffixed form (with -il); accent paradigm B (ƛ̣:olbó-l,ƛ̣:albá-l). Note the parallel meaning 'kin, family' in Av. (a rather archaic feature).
Cf. also Akhv. Tlan., Ratl., Tseg. eƛ̣:eb, Kar. Anch. reƛ̣:ebo ( < *herƛ̣:ebo). The epenthetic -r- in Kar. Anch. and Bagv. is obviously secondary.