The headword, a neuter noun in the nominative/accusative singular, is presumably extracted from the quotation given.
[1] For Abydos, on the Asiatic side of the Hellespont straits, see generally alpha 101. It was ideally positioned to tax passing shipping; compare e.g. Xenophon, Hellenica 1.1.22 (web address 1) on the dekateuterion at Chrysopolis (opposite Byzantium) in the late C5 BCE.
[2] Agathias, Histories 5.12. In 559 CE, Zabergan (cf. PLRE IIIb s.v. Zabergan(2)), ruler of the Cotrigur Huns, contemplates his attack on the Thracian Chersonese (the modern-day Gallipoli Peninsula, cf. chi 215) and the adjacent Asiatic coast; cf. Frendo (147).