Ma'anar ƙamus na "libido" shine kuzari ko ƙarfi wanda ke motsa sha'awar jima'i da halayenmu. Ana amfani da shi sau da yawa don komawa zuwa jima'i ko sha'awar jima'i gaba ɗaya. Shahararren masanin ilimin halayyar dan adam Sigmund Freud ne ya kirkiro wannan kalma, wanda ya yi amfani da shi wajen bayyana makamashin da ba a san shi ba wanda ke tafiyar da halayen dan adam, gami da dabi'ar jima'i. A cikin amfani na zamani, ana amfani da kalmar "libido" a cikin ma'ana ta gaba ɗaya don nuni ga gaba ɗaya matakin sha'awar jima'i ko sha'awar mutum.