12th cent. From Late Latin barca 'id.,' from Vulgar Latin *barica 'id.' From Latin baris "boat" with diminutive suffix -ica added. The word was borrowed from Greek βάρις (báris) "boat," (originally referring to Egyptian boats). A loanword from Coptic baare "small boat."
Also the origin of the surnames Barca and Barcas.
Asturian barca, Portuguese barca, Galician barca, Catalan barca, French barque, Italian barca, Romanian barcă