Dictionary
2 ENTRIES FOUND:

sign language

noun

: a system of hand movements used for communication especially by people who are deaf

Full Definition of SIGN LANGUAGE

1
:  a formal language employing a system of hand gestures for communication (as by the deaf)
2
:  an unsystematic method of communicating chiefly by manual gestures used by people speaking different languages

First Known Use of SIGN LANGUAGE

1839

Rhymes with SIGN LANGUAGE

sign language

noun    (Medical Dictionary)

Medical Definition of SIGN LANGUAGE

:  a formal language employing a system of hand gestures for communication (as by the deaf)—compare finger spelling

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