a piece of cloth or similar material, typically oblong or square, attachable by one edge to a pole or rope and used as the symbol or emblem of a country or institution or as a decoration during public festivities

the American flag

a small piece of cloth attached at one edge to a pole and used as a marker or signal in various sports

the flag's up

a variable used to indicate a particular property of the data in a record

mark (an item) for attention or treatment in a specified way

the spellcheck program flags any words that are not in its dictionary

(of an official) raise a flag to draw the referee's attention to a breach of the rules in soccer, rugby, and other sports

the goalkeeper brought down Hendrie and a linesman immediately flagged

provide or decorate with a flag or flags

a flat stone slab, typically rectangular or square, used for paving

a plant with sword-shaped leaves that grow from a rhizome

become tired or less enthusiastic or dynamic

if you begin to flag, there is an excellent cafe to revive you