ἄχυρον (áchyronakh'-oo-ronnounchaff)
[Grk] ἄχυρον LN: 3.57 GK: G949 Hebrew: אוּר, בְּלִיל, חֹמֶר, מֹץ, תֶּבֶן
Derivation: perhaps remotely from χέω (to shed forth);
Strong's: chaff (as diffusive)
KJV: --chaff.