G2788
κιθάρα
harp
κιθάρα, -ας, ἡ [in LXX chiefly for כִּנּוֹר, frequently in Psa.33:2, al.); and in (Dan.3:5, al.) for קִיתָרֹס, itself a transliteration of κίθαρις, the Homeric form of κ. (cf. CB, Dn., lviii) ;] a lyre, harp: 1Co.14:7, Rev.5:8 14:2 15:2.† (AS)
The KJV translates G2788 in the following manner:
harps (6x), harp (2x)
Full Thayer's lexicon entry
κιθάρα — kithára
κιθάρα, κιθάρας, ἡ, a harp (cf. Stainer, Music of the Bible, chapter iv.; B. D., under the word ): 1Co 14:7; Rev 5:8; Rev 14:2; τοῦ Θεοῦ, to which the praises of God are sung in heaven, Rev 15:2; cf. Winers Grammar, § 36, 3 b. (From Homer h. Merc., Herodotus on.)
4 occurrences
I Corinthians (1), Revelation of John (3)