millaEtymologyFrom Spanish milla (“Spanish mile”), from Latin mīlia (“Roman mile”), plural of mīlle (“1000”) in reference to its composition of 1000 Roman paces. Doublet of mile and milha.milla means spanish mile, a traditional Spanish unit of distance equivalent to about 1.4 km. Lexicurio rates it Sui generis — a strength score of 88 out of 100.nounSpanish mile, a traditional Spanish unit of distance equivalent to about 1.4 km.