Gorilla Sign Language

== English == === Etymology === Blend of gorilla +‎ American Sign Language. Coined by Francine "Penny" Patterson, president and research director at the Gorilla Foundation. === Proper noun === Gorilla Sign Language A personally modified form of American Sign Language intended for communication with gorillas, especially some of those that are subjects of research at the Gorilla Foundation. ==== Synonyms ==== GSL (initialism)