See also kappa 1890, kappa 1891.
[1] Uncritical abbreviation of Herodian, De prosodia catholica p. 444-445 Lentz (citing Philoxenus fr.120 Theodoridis) "knuzw= is of both the first and the second conjugation [i.e. both regular and contracted]; its future is knuzh/sw, hence knuzhqmo/s like mukhqmo/s ... Some derive it from ko/nuza 'fleabane', as in 'ground-seeking fleabane' [Nicander, Theriaca 70], becoming knuzw= like ko/ruza > koruzw= and r(i/za > r(izw=, which is improbable. It is better to say in agreement with Philoxenus that it is derived from knu/w, which means 'scratch'." The derivation is also given in Eustathius, Commentary on the Odyssey II p.54 Stallbaum, Etymologicum Gudianum s.v. kluzw=sai. Why "fleabane" would offer a plausible etymology for either "whimper" or "darken/destroy" (kappa 1891) is not explained by any commentator.
[2] Glossed by ps.-Zonaras s.v. and Gennadius Scholarius, Grammar II p. 460 Judie Petit & Siderides as "unclear noise of dogs, and crying"; by the Etymologicum Gudianum as "crying of dogs, or inarticulate voice of crying"; by Hesychius as "a kind of vocal sound"; by the scholia to Aristophanes, Wasps 977, as "a kind of dogs' voice"; and by the scholia to Theocritus, Idylls 6.29, as "dogs' inarticulate howl". See kappa 1887.
[3] Quotation unidentifiable; Adler suggests Aelian.