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2.
1. The seaward pull of receding waves after they break on a shore.

2. an inclination different from your strongest feelings

3. An album by Tool
His account had a poignant undertow of regret.
by Anesta January 26, 2006
 
1.
The first true album from the band Tool, Undertow shows a deep connection to emotion, especially anger.

Altenatively, it is a song on the Album.
Undertow is an awesome Album, and my favorite song on it is Undertow!
by Maro July 29, 2005
 
3.
The Undertow is illiterate and quick to anger when its masculinity feels threatened. The root of its anger is due to repeated head trauma as an infant. It can be found in sleazy strip joints, or Pottery Barn, depending on the time of day. The Undertow is easily outsmarted and is in danger of extinction. No effort has been made to save this species.
That Undertow gives a bad name to all Jets fans.
by CoveredInBees May 24, 2005
 
4.
the patch of flesh directly above the penis or vagina, usually covered with thick pubic hair.
That is one hairy undertow.
Damn, my undertow itches.
by Brian King February 22, 2006