G1549
ἔκγονος
descendant
ἔκ-γονος, -ον (ἐκγίγνομαι, to be born of), [in LXX for פְּרִי (neut.), בֵּן, etc. ;] __1. with genitive, born of. __2. As subst., ὁ, ἡ ἔ., a child, son or daughter; in pl., descendants: τέκνα ἢ ἔ., children or grand-children, 1Ti.5:4.† (AS)
The KJV translates G1549 in the following manner:
nephews (2x)
Full Thayer's lexicon entry
ἔκγονον — ékgonon
ἔκγονος, ἔκγονον (ἐκγίνομαι), sprung from one, born, begotten (Homer and following); commonly as a substantive, ὁ, ἡ ἔκγονος, οἱ ἐκγονοι, a son, daughter, offspring, children, descendants; in the Sept. common in neuter plural ἔκγονα and τά ἔκγονα, for פְּרִי, Deu 7:13 (Alex.);, etc.; צֶאֱצָאִים, Isa 48:19; Isa 61:9; בֵּן, Isa 49:15; also in Sir 40:15 Sir 44:11, etc. In the N. T. once: 1Ti 5:4 τέκνα ἤ ἔκγονα, grandchildren (A. V. renders it by the obsolete, nephews; cf. Eastwood and Wright, Bible Word-Book, or B. D. American edition under the word ).
1 occurrence