Definition of "Mess" :

noun: a (large) military dining room where service personnel eat or relax

noun: a meal eaten in a mess hall by service personnel

noun: soft semiliquid food

"A mess of porridge."

noun: (often followed by of') a large number or amount or extent

noun: informal terms for a difficult situation

noun: a state of confusion and disorderliness

"The house was a mess."

verb: make a mess of or create disorder in

"He messed up his room."

verb: eat in a mess hall