The name that is transliterated as “Cos” in English is translated in Libras (Brazilian Sign Language) with a sign that combines the signs for “crab” (the meaning of the name) and “currency” (the local currency that was printed in Cos had an emblem of a crab). (Source: Missão Kophós )
“Cos” in Libras (source )
For more information on translations of proper names with sign language see Sign Language Bible Translations Have Something to Say to Hearing Christians .