2.5

1. measurement of anything quick or short. 2. half of a "take five", to return quickly.

1. She drove so fast she got here in like 2.5! 2. I'll be back in 2.5, you won't even notice I'm gone.

by Caitie March 5, 2004

2.5

A rent-a-cop, security guard at the mall, half of a 5.0

The 2.5 yelled at me for loitering out front of the mall even though i was smoking.

by Knotfal JOe April 28, 2008

2/5

A hairstyle worn by emo kids where two-fifths of their face is obstructed by their hair.

AJ: I went to the Fall Out Boy concert last night.
Thomas: How many 2/5's did you punch
AJ: Me? 3. Daniel? 8.
Thomas: Tits.

by Elite CAT May 8, 2008

2.5

Someone who is very high on the feminine scale.

Bob: Oh man!! That guy is a 2.5!

by LillersAndMurrbethhhh January 26, 2011

2.5-0

A security guard. Derived from 5-0, slang term for a cop. Security guards carry about half the credibility and authority as a regular cop, hence the 2.5.

See also rent-a-cop, mall security.

"Bobby and I were throwing mustard off of the balcony, then some 2.5-0 come by and threatens to calls the cops. Lame"

by JakeStar November 3, 2005

2.5 D

an image with characteristics of 2 dimensional and 3 dimensional images

The new game has 2.5 D graphics.

by The Return of Light Joker August 24, 2008

2.5 ft of swaying death

n
See girth; see length; see width
see also antonio

A penis.

That guy has 2.5 ft of swaying death!

by Del the Funky Homosapien November 11, 2004