redder, reddest
- of a colour at the end of the spectrum next to orange and opposite violet, as of blood, fire, or rubies红（色）的（如血液、火焰或红宝石的颜色）：
her red lips
她的红唇
the sky was turning red outside.
外面的天空正在转红。
- (of a person or their face or complexion) flushed or rosy, especially with embarrassment, anger, or a healthy glow（尤指不安、气愤或肤色健康）通红的, 红润的：
there were some red faces in headquarters
总部里有些人气得面红耳赤
he went bright red.
他脸色变得又红又亮。
- (of a person's eyes) bloodshot or having pink rims, especially with tiredness or crying（尤指疲劳或哭泣）眼睛充血的, 眼眶发红的：
her eyes were red and swollen.
她的眼睛又红又肿。
- (of hair or fur) of a reddish-brown colour（头发或皮毛）红褐色的。
- dated, offensive (of a people) having or regarded as having reddish skin〈旧, 冒犯〉（人）红种的。
- of or denoting the suits hearts and diamonds in a pack of cards（纸牌中）红桃的, 红方块的。
- (of wine) made from dark grapes and coloured by their skins（葡萄酒）红的。
- denoting a red light or flag used as a signal to stop（表示停止）红（灯）, 红（旗）。
- used to denote something forbidden, dangerous, or urgent被禁止的, 危险的, 紧急的：
the force went on red alert.
部队进入红色戒备状态。
- (of a ski run) of the second-highest level of difficulty, as indicated by coloured markers on the run（滑雪道上用红色标志指示）第二高难度的。
- Physics denoting one of three colours of quark【物理】表示夸克三种颜色之一的红色。
Red
informal, chiefly derogatory communist or socialist (used especially during the cold war with reference to the Soviet Union)〈非正式, 主贬〉共产主义的, 社会主义的; 赤色的, 红色的（尤指冷战期间用于指前苏联）：the Red Menace.
赤色威胁。与 WHITE （义项 3） 相对。
- stained or covered with blood沾有鲜血的：
the red hands and sharp knives of the fishermen.
渔夫们沾着鲜血的双手和利刃。
- archaic or poetic/literary involving bloodshed or violence〈古或诗/文〉流血的, 暴力的：
red battle stamps his foot and nations feel the shock.
血腥战斗脚一跺, 大国小国感震波。
- （亦作red-blanket）S. African (of a Xhosa) coming from a traditional tribal culture〈南非〉（科萨人）来自传统部落文化的。与SCHOOL相对。
- ORIGIN: with reference to the ochred blankets traditionally worn by the Xhosa people.
- mass noun red colour or pigment红色, 红颜料：
colours range from yellow to deep red
从黄到深红的颜色
their work is marked in red by the teacher
老师用红笔批改他们的作业
count noun the reds and browns of wood.木头的红色和褐色。
- red clothes or material红衣, 红色材料：
she could not wear red.
她不能穿红色衣服。
- a red thing or person, in particular红色物（或人）, 尤指：
- mass noun a red wine红葡萄酒。
- a red ball in snooker or billiards（斯诺克, 台球的）红色球。
- a red light红灯。
- （亦作Red）informal, chiefly derogatory a communist or socialist〈非正式, 主贬〉共产主义者, 社会主义者。
the red
the situation of owing money to a bank because one has spent more than is in one's account赤字, 亏空：the company was £4 million in the red.
公司亏损了400万英镑。
ORIGIN: from the conventional use of red to indicate debt items.
better dead than red（或better red than dead）
- a cold-war slogan claiming that the prospect of nuclear war is preferable to that of a communist society (or vice versa)（冷战口号）宁打核战, 不要共产（或： 宁要共产, 不打核战）。
(as) red as a beetroot （〈北美〉beet）
- (of a person) red-faced, typically through embarrassment（尤指受窘而）满脸通红。
red in tooth and claw
- involving savage or merciless conflict or competition（冲突, 竞争）野蛮的, 残忍的：
nature, red in tooth and claw.
野蛮残忍的自然界。
ORIGIN: from Tennyson's In Memoriam.
the red planet
- a name for Mars火星。
(like) a red rag to a bull
- an object, utterance, or act which is certain to provoke someone惹人恼火的事物（言行）：
the refusal to discuss the central issue was like a red rag to a bull.
拒绝讨论中心问题像激怒公牛的红布。
reds under the bed
- used during the cold war with reference to the feared presence and influence of communist sympathizers in a society床下藏有赤色分子（指冷战中对同情共产主义者的恐惧）。
see red
- informal become very angry suddenly〈非正式〉突然发怒, 火冒三丈：
the mere thought of Piers with Nicole made her see red.
她一想到皮尔斯和妮可儿在一起就火冒三丈。