G4738
στῆθος
chest
στῆθος, -ους, τό [in LXX: Exo.28:23, 26 (29-30) (לֵב), etc. ;] the breast: Jhn.13:25 21:10, Rev.15:6; as a sign of penitence, τύπτειν (εἰς) τὸ σ., Luk.18:13 23:48,† (AS)
The KJV translates G4738 in the following manner:
breast (6x), breasts (4x)
Full Thayer's lexicon entry
στῆθος — stēthos
στῆθος, στήθους, τό (from ἵστημι; that which stands out, is prominent (Etym. Magn. 727, 19 διότι ἕστηκεν ἀσάλευτον)), from Homer down, the breast: Joh 13:25; Joh 21:20 (cf. κόλπος, 1); Rev 15:6. τύπτειν εἰς τό στῆθος or τύπτειν τό στῆθος, of mourners (see κόπτω), Luk 18:13; Luk 23:48.
5 occurrences
Luke (2), John (2), Revelation of John (1)