G1606
ἐκπνέω
to expire
ἐκ-πνέω, -ῶ, to breathe out; sc. βίον, ψυχήν (expressed in cl., Æsch., al.; cf. LS, see word), to breathe one's last, expire: Mrk.15:37, 39 Luk.23:46. For force of aorist, see Swete, Mrk.15:37.† (AS)
The KJV translates G1606 in the following manner:
ghost (6x)
Full Thayer's lexicon entry
ἐκπνέω — ekpnéō
ἐκπνέω: 1 aorist ἐξέπνευσα; to breathe out, breathe out one's life, breathe one's last, expire: Mar 15:37; Mar 15:39; Luk 23:46, and often in Greek writings, both without an object (from (Sophocles Aj. 1026) Euripides down), and with βίον or ψυχήν added (from Aeschylus down).
3 occurrences
Mark (2), Luke (1)