לוּל (lûwlloolnoun|masculineshaft)
[Heb] לוּל ETCBC: לוּל‎ (subs|[uncertain]) OSHL: l.ax.ah TWOT: 1094 GK: H4294
Derivation: from an unused root meaning to fold back;
Strong's: a spiral step
KJV: winding stair. Compare לֻלָאָה.