Snatchblock 

A pulley used gain a mechanical advantage when using wire rope or cable. Related to the "Block and Tackle"

If an bundle extractor isn't available and a forklift won't reach it,a heat exchanger bundle may be stuffed into the shell using a winch(or tugger) cable rove through a snatchblock on the shell and back to a strongback thats attached to the tubesheet.

Snatchblock by The Pipe Doctor January 25, 2009

Snatchblock 

The female version of cockblock.

Man, that dude totally snatchblocked me.

Snatchblock by WhiskeyWednesdayREPRESENT March 29, 2011

snitchblock

To stop an act of snitching already in progess.

Ms. Egan: Andrew can you PLEASE start singing!

Mr. Saucier: He's doing just fine Ms. Egan.

Gian to Bobby: YO! Sauce just Snitchblocked Ms. Egan

snitchblock by Rgoetz1 August 3, 2007

snatch block 

The opposite of a cock block; when the girl is preventing you from scoring...

"God! Tina is being such a snatch block!"

snatch block by Katie V December 4, 2007

snatchback 

A black girl's hair when it's pulled back into a rushed ponytail.

I didn't have time to do her hair this morning, so she's sporting the snatchback today.

snatchback by RikkiPG December 28, 2007

snatch block 

A woman who interferes with another woman's attempts to score with a guy. Similar to some definitions of cock block, except that a woman is competing for the attention of another woman's man.

Girlfriend: My roommate Griselda is such a snatch block!
Boyfriend: What do you mean?
Girlfriend: Out of all my friends, she only talks to you. And she practically dresses up whenever you come over!

snatch block by The Rhino's Nemesis June 4, 2010

snatchback 

Any car that is well known for being host to sexual acts.

I drive a snatchback

snatchback by P Dittle October 9, 2005