ὀνικός (onikós|on-ik-os'|adjective|of a donkey)
[Grk] ὀνικός LN: 4.32 GK: G3948
Derivation: from ὄνος;
Strong's: belonging to a ass, i.e. large (so as to be turned by a ass)
KJV: --millstone.
See: ὄνος