tongue
n. countablen. the soft, moving part inside your mouth that you use for tasting, licking, and speaking. It is also a word for a language.
n. the fleshy muscular organ in the mouth of a mammal, used for tasting, licking, swallowing, and articulating speech. It can also refer to a specific language or a strip of material under the laces of a shoe.
The doctor asked me to stick out my tongue.
She spoke in her mother tongue during the phone call, as it felt more natural than using English.
The chef's palate was so refined that even a tiny sample on the tip of his tongue allowed him to identify every spice in the complex sauce.
Commonly used in the idiom 'mother tongue' to refer to a first language; also used to describe the flap of leather under shoe laces.
English is my first tongueEnglish is my mother tongueWhile 'tongue' can mean language, learners should use the fixed collocation 'mother tongue' or 'native language' when referring to their first language.