名詞 red:

1. red color or pigment; the chromatic color resembling the hue of blood
   同義詞：redness
2. a tributary of the Mississippi River that flows eastward from Texas along the southern boundary of Oklahoma and through Louisiana
   同義詞：Red River
3. emotionally charged terms used to refer to extreme radicals or revolutionaries
   同義詞：Bolshevik, Marxist, bolshie, bolshy
4. the amount by which the cost of a business exceeds its revenue
   同義詞：loss, red ink

形容詞 red:

1. of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies
   同義詞：reddish, ruddy, blood-red, carmine, cerise, cherry, cherry-red, crimson, ruby, ruby-red, scarlet
2. characterized by violence or bloodshed- Hudson Strode
   同義詞：crimson, violent
3. (especially of the face) reddened or suffused with or as if with blood from emotion or exertion
   同義詞：crimson, reddened, red-faced, flushed
4. red with or characterized by blood- P.B.Sears

1. The sky slowly changed from blue to red.
   天空慢慢由藍(lán)色變?yōu)榧t色。
2. I received a bunch of red roses on my birthday.
   生日那天，我收到一束紅玫瑰。

red

n.（名詞）

Color The hue of the long-wave end of the visible spectrum, evoked in the human observer by radiant energy with wavelengths of approximately '30 to 750 nanometers; any of a group of colors that may vary in lightness and saturation and whose hue resembles that of blood; one of the additive or light primaries; one of the psychological primary hues.
【色彩】 紅色：以通過發(fā)光的能量來激發(fā)觀察者的可見光譜中長波末端的顏色，波長大約為'30到750毫微米；亮度和飽和度雖有不同、但都類似血液的任意一組顏色；附加的或明亮的原色之一；心理原色之一
A pigment or dye having a red hue.
紅顏色，紅染料
Something that has a red hue.
紅色物體

Often Red A Communist.
常作 Red 共產(chǎn)主義者
A revolutionary activist.
革命活動(dòng)者
adj.（形容詞）
red.der,red.dest
Color Having a color resembling that of blood.
【色彩】 紅色的：有象血似的顏色的
Reddish in color or having parts that are reddish in color:
紅的：整體或部分是紅顏色的：
例句：
a red dog; a red oak.
一條紅色的狗；一棵紅橡樹

Having a reddish or coppery skin color.
紅膚色的：有紅棕色或古銅色膚色的
Often Red Offensive Of or being a Native American.
常作 Red 【無禮用語】 美洲印地安人：屬于或作為土生美洲人的
Having a ruddy or flushed complexion:
臉紅的：臉色紅潤或羞紅的：
例句：
red with embarrassment.
尷尬得滿臉通紅

Often Red Communist.
常作 Red 共產(chǎn)主義的

<習(xí)慣用語>in the red
Operating at a loss; in debt.
賠本經(jīng)營的；負(fù)債的
來源：
Middle English
中古英語
from Old English rôad * see reudh-
源自 古英語 rôad *參見 reudh-

【引伸】
red.ly
adv.（副詞）
red.ness
n.（名詞）