tongue

language, speech, tongue, dialect, idiom, slang

这些名词均含“语言”之意。
language: 普通用词，含义广。指人的语言或文字，或动物的语言。既可指口头或书面语言，也可指手势语等。
speech: 特指人的口语，也指正式的讲话。
tongue: 书面用词，指人的语言，亦指人的母语。
dialect: 指一种语言中，某一地方所特有的语言形式，即方言。
idiom: 指一种语言中一般由几个词结合成短语或句子的特殊表达方式，即惯用语、成语。也指方言。
slang: 指俚语。

名词 tongue:

1. a mobile mass of muscular tissue covered with mucous membrane and located in the oral cavity
   同义词：lingua, glossa, clapper
2. a human written or spoken language used by a community; opposed to e.g. a computer language
   同义词：natural language
3. any long thin projection that is transient
   同义词：knife
4. a manner of speaking
5. a narrow strip of land that juts out into the sea
   同义词：spit
6. the tongue of certain animals used as meat
7. the flap of material under the laces of a shoe or boot
8. metal striker that hangs inside a bell and makes a sound by hitting the side
   同义词：clapper

动词 tongue:

1. articulate by tonguing, as when playing wind instruments
2. lick or explore with the tongue

1. The dog's tongue was hanging out.
   这条狗把舌头伸在外面。
2. The tongue is one of the vocals.
   舌头是发声器官之一。
3. The doctor looked at her tongue.
   医生诊看了她的舌头。
4. English is her mother tongue.
   英语是她的母语。