A step of a ladder.

• A crosspiece between the legs of a chair.

A level or position in a hierarchy or career.

A floor timber in a ship.

• A cart stake, spar, or heavy staff.
• A radial handle projecting from a steering wheel.
• A pin or trundle of a lantern wheel.

Past participle of ring (esp. of a bell).

• Nonstandard simple past of ring.

Of a pig: having a ring through the nose.