Definition of mess:
a state of confusion and disorderliness; "the house was a mess"; "she smoothed the mussiness of the bed"
informal terms for a difficult situation; "he got into a terrible fix"; "he made a muddle of his marriage"
soft semiliquid food; "a mess of porridge"
a meal eaten in a mess hall by service personnel
a (large) military dining room where service personnel eat or relax
(often followed by `of') a large number or amount or extent; "a batch of letters"; "a deal of trouble"; "a lot of money"; "he made a mint on the stock market"; "see the rest of the winners in our huge passel of photos"; "it must have cost plenty"; "a slew of journalists"; "a wad of money"
eat in a mess hall
make a mess of or create disorder in; "He messed up his room"