COMMENT: Reconstructed for the PEC level. The hypothesis of derivation from *=ixA 'to reap' (Klimov 1971, 227) is tempting, but there are some obstacles: medial *-n- (reconstructed because of the supposed PL *-n- and of PN and Av. initial n-); labialisation of *xw; difference in tenseness. It is probably wiser to think of a secondary contamination of the two roots in some languages (Av.-And. and Darg.).
