1flag 
/ˈflæg/ noun
plural flags /ˈflæg/ noun [count] 1 : a piece of cloth with a special design that is used as a symbol of a nation or group
▪ raise/lower the American flag ▪ The flag was flying [=the flag was raised up on a pole] over the fort. ◊To fly/show/wave the flag is to display the flag of your country as a sign of patriotism. 2 : a piece of cloth used as a signal or to attract attention
▪ waving a flag of surrender/truce ▪ a checkered flag ▪ The referee threw a penalty flag. — see also red flag, white flag
▪ raise/lower the American flag ▪ The flag was flying [=the flag was raised up on a pole] over the fort. ◊To fly/show/wave the flag is to display the flag of your country as a sign of patriotism.
▪ waving a flag of surrender/truce ▪ a checkered flag ▪ The referee threw a penalty flag. — see also red flag, white flag
— compare 4flag
