diḳḳu ‘small, meagre’ (CAD D 159 (only in PNs); CDA 60), duḳḳatu ‘powder’ (CAD D 190, hapax), daḳḳu ‘crashed, smalľ (AHw. 162, CAD D 107), daḳḳatu ‘smal amount’ (CAD D 107) and other words attested in lexical lists.
d instead of the expected z suggests a borrowing from Arm.; in this case -u of the first syllable would reflect early Arm. *-u, the vocalism possibly confirmed by the Amarna form (SED I No. 65, Abraham–Sokoloff 2011:29).
See also dūrāniš ‘over the walľ (AHw. 177, CAD D 190). The underlying semantic development is, most probably, from ‘what surrounds, encircles’ (Marrassini 1971, 49f.). A derivation from the secondary meaning ‘to dwell (’(walled) dwelling space’) is not to be ruled out completely (if accepted, at least some of the WS nominal derivations with the meaning “dwelling” listed here may be directly related to Akk. dūru). Still another semantic derivation, discussed in Buck 1949, 473 for Germanic words for “wall” (Gothic -waddjus, German Wand), is from “to turn, to plait” as referring to a wall of wattle-work.
Cf. nībittu ‘a girdle’ (CAD N2 201, AHw. 774). Probably different from ebêṭu “to have cramps’.