1red 
/ˈrɛd/ adjective
red·der; red·dest /ˈrɛd/ adjective [also more red; most red] 1 : having the color of blood
▪ a shiny red fire truck ▪ bright red shoes ▪ dark red apples 2 : reddish brown or reddish orange in color
▪ She has red hair. [=she is a redhead] ▪ a red fox 3 of a person's face : pink because of embarrassment, anger, etc.
▪ His face turns red when he gets angry. ▪ When she realized her mistake, she turned beet red. [=she blushed] ▪ (Brit) His face went red with embarrassment. 4 of eyes : having many red lines from lack of sleep, drunkenness, etc. : bloodshot
▪ Her eyes were red from crying. 5 somewhat old-fashioned, informal + disapproving : supporting Communism : communist
▪ a shiny red fire truck ▪ bright red shoes ▪ dark red apples
▪ She has red hair. [=she is a redhead] ▪ a red fox
▪ His face turns red when he gets angry. ▪ When she realized her mistake, she turned beet red. [=she blushed] ▪ (Brit) His face went red with embarrassment.
▪ Her eyes were red from crying.
a red rag to a bull
Brit, informal : something that makes a person very angry
▪ Just mentioning his poor marks to him was waving a red rag to a bull.
▪ Just mentioning his poor marks to him was waving a red rag to a bull.
not one red cent — see cent
paint the town red — see 2paint
— red·ness /ˈrɛdnəs/ noun [noncount]
▪ There was swelling and redness around the site of the bee sting.
/ˈrɛdnəs/ noun [noncount] ▪ There was swelling and redness around the site of the bee sting.
