Scarcely attested (in Akk. and Arb.); phonetically and semantically highly problematic. Vocalism based on Akk. only, as the Arb. form represents a derived pattern.
Akkadian
ḫanṣātu - part of human body, possibly waist
(CAD ḫ 81, AHw 321)
(pl. t.), Possibly < *ḫamṣātu (on n < m before sibilants in Akk. see [GAG 40]).
Arabic
ˀaḫmaṣ- - middle of the body, slim mid body
(BK 1 633)
Cf. ḫmṣ ‘to be empty (said of the belly); de-swelling (said of a wound from which the swelling goes away)’ [ibid.] (cf. the latter meaning also in ḫmṣ [ibid. 492])