ἀδελφιδέος
From LSJ
ὣς ὁ μὲν ἔνθ' ἀπόλωλεν, ἐπεὶ πίεν ἁλμυρὸν ὕδωρ → so there he perished, when he had drunk the salt water
English (LSJ)
contr. -οῦς, ὁ,
A nephew, Alcm.56A, etc.; usu. brother's son, Hdt.1.65, 6.94, al., Th.2.101, etc.; also, sister's son, Hdt.4.147, Str.10.5.6, etc.:—also ἀδελφ-ιδός, beloved one, LXX Ca.2.3, al.
German (Pape)
[Seite 32] ὁ, Neffe, Her. 1, 65, s. -δοῦς.
Greek (Liddell-Scott)
ἀδελφιδέος: συνῃρημ. -οῦς, ὁ, «ἀνεψιός», συνήθως υἱὸς ἀδελφοῦ, Ἡρόδ. 1. 65., 6. 94, καὶ ἀλλ., Θουκ. 2. 101, κτλ.· ὡσαύτως, υἱὸς ἀδελφῆς, Ἡρόδ. 4, 147, Θουκ. 2. 101, κτλ.· ὡσαύτως ἀδελφιδός, = ἀδελφός, ἀγαπητός, φίλτατος, Ἑβδ. (ᾎσμ. β΄, 3, καὶ ἀλλ.).