Thayer's
STRONGS NT 892: ἄχυρονἄχυρον,
ἀχύρου,
τό, "a stalk of grain from which the kernels have been beaten out; straw broken up by a threshing-machine, chaff":
Matthew 3:12;
Luke 3:17. (In Greek writings from
Herodotus 4, 72;
Xenophon, oec. 18. 1, 2, 6 down; mostly in plural
τά ἄχυρα; in
Job 21:18 the
Sept. also of the chaff accustomed to being driven away by the wind.)