Ma'anar ƙamus na "kwarin gwiwa" yana nufin jima'i ko haɗin gwiwa tsakanin mutane biyu na jinsi ɗaya ko kuma akasin haka, yawanci ya haɗa da shigar da azzakari na namiji a cikin farjin mace. Kalma ce da aka saba amfani da ita a fannin ilmin halitta, ilmin dabbobi, da sauran fannonin kimiyya don bayyana aikin haifuwa ta zahiri na jima'i tsakanin dabbobi, gami da mutane.
