Kalmar “kunci” tana nufin fitaccen kashi da ke samar da sashin sama na kunci da kuma kasan kwarjin ido a cikin mutane da wasu dabbobi. Ana kuma san shi da kashi zygomatic ko kashin malar. Kunci yana taka muhimmiyar rawa wajen kamanni da tsarin fuska, da kuma kare idanu da tallafawa tsokoki na muƙamuƙi.
