For full bibliographical discussion see DNWSI s.v. kṣr and s.v. kṣryˀ and cf. qṣr n.m. We see little reason to separate the entries; and a connection with Akkadian kiṣru, "troop", (esp. Neo-Assyrian rab kiṣri, "commander", seems most logical for both examples. Cf. also s.v. rb kṣr n.m