1. A rivulet or small brook.

2. A small stream.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• rurel,
• tunel,
• ruseel,
• tunnal,
• runer,
• ruinned,
• jannel,
• renne,
• brunel,
• furnel,
• ruinen,
• runnere,
• runneth,
• tunnnel,
• runen,
• junnele,
• runney,
• runned,
• funel,
• rennee

• run low,
• rummel,
• rummell.

The adjective form of the word "runnel" is "runnelled" (or "runneled" in American English).

The plural of the "runnel" can be the "runnels".

The singular of the "runnel" can be the "runnel".