mos' 

Abbreviation of "most," meaning "very."

Yo' booty be mos' def.

mos' by Safran May 7, 2003

mös 

An angry state of mind with a dash of femininity, usually triggered by low self-consciousness.

What's wrong with him today? I dont know, maybe he's just mös.

mös by FordFocus1.6TDCI July 6, 2022

mos def 

a fly MC, often apperaring alongside Talib Kweli, The Roots, or Common

mos def is one ill nigga, son

mos def by Ponyboy August 3, 2003

mos def 

Slang for 'most definitely'

"Wan' a cig, man? "Mos' def!"

mos def by David Allison August 21, 2003

mos def 

A man who can not only act with 5 star ability, but can also create some of the best shit out on recording ever.

Mos Def yet an actor of decent fame still keeps his hip-hop true.

mos def by Paul October 2, 2003

Mos Eisley

Mos Eisley Spaceport, Tatooine. You will never find a more wretched hive of scum and villainy.

When visiting Mos Eisley, one must be cautious.

Mos Eisley by Ben Kenobi; crazy old wizard. October 22, 2009

mos def 

(adv.) meaning: most definitely; the phrase also pays homage to the infamous emcee, Mos Def.

"You better hit me up with those tracks."
"I'll mos def hit you back, hommie."

mos def by kduballstar October 6, 2005