λεῖος (leîos|li'-os|adjective|smooth)
[Grk] λεῖος LN: 79.86 GK: G3308 Hebrew: בִּקְעָה‎, חָלַק‎, חַלֻּק‎
Derivation: apparently a primary word;
Strong's: smooth, i.e. "level"
KJV: --smooth.