sign language

noun
UK /ˈsaɪn ˌlæŋ.ɡwɪdʒ/
US /ˈsaɪn ˌlæŋ.ɡwɪdʒ/

A way of talking with your hands and face instead of your voice.

My friend is deaf, so we use sign language to chat.


OTHER MEANINGS

2. A system of hand movements used by deaf people to communicate.

She learned American Sign Language to talk with her cousin.

3. Any set of gestures used to give messages without words.

The coach gave sign language from the sideline to call the next play.

4. A formal language with its own grammar, not just hand signs.

British Sign Language has its own rules, different from English.