The headword, presumably extracted from the quotation given, is a feminine noun in the nominative (and vocative) plural; cf. sigma 938, sigma 939, and see generally LSJ s.v. sph=lugc, -uggos.
[1] The first gloss is a neuter noun in the nominative (and vocative) plural; see generally LSJ s.v. sph/laion, and cf. the Synagoge and Photius' Lexicon s.v. sph=lugc; also epsilon 2961 (end). The second gloss is the same form, from the noun koi/lwma; see generally LSJ s.v. and cf. Hesychius s.v. sph/lugges.
[2] Greek Anthology 6.253.1-2 (Krinagoras/Crinagoras): the hunter Sosander's dedication to Hermes, Pan, and the Nymphs; cf. pi 2244, pi 2954 (end), and epsiloniota 14 (Gow and Page, vol. I, pp. 224-5; vol. II, pp. 254-5). [In her critical apparatus Adler reports that mss VM transmit to/sson, as in pi 2244 and pi 2954.]