Strong’s Greek
G257 — halon
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἅλων
halon — pronounced hal'-ohn
probably from the base of 1507; a threshing-floor (as rolled hard), i.e. (figuratively) the grain (and chaff, as just threshed):--floor. see GREEK for 1507
2 occurrences in the KJV.
Matthew 3:12
Whose fan is in his hand, and he will throughly purge his floor, and gather his wheat into the garner; but he will burn up the chaff with unquenchable fire.
Luke 3:17
Whose fan is in his hand, and he will throughly purge his floor, and will gather the wheat into his garner; but the chaff he will burn with fire unquenchable.