[1] Likewise or similarly in other lexica (see the references at Photius kappa1329 Theodoridis), deriving from Pausanias the Atticist (kappa62), and cf. also several Homeric scholia (e.g. to Odyssey 5.267).
[2] boulgi/dion is a diminutive from Latin bulga, used e.g. by Constantine Porphyrogenitus, De Caeremoniis p. 470, 471, 474 Reiske.
[3] Definition repeated in sigma 40, and unique to the Suda. Only senses relating to sacks are attested in LSJ s.v. (with the added metaphorical extension of "scrotum"). The secondary meanings ("boat" and "mussel") in Hesychius kappa4884 do not shed light here either.