What is the meaning of the motto "NO8DO" found on the flag of the Spanish town Seville?

Seville is the capital and largest city of the Spanish autonomous community of Andalusia and the province of Seville. It is situated on the lower reaches of the River Guadalquivir, in the southwest of the Iberian Peninsula.

Seville has a municipal population of about 690,000 as of 2016, and a metropolitan population of about 1.5 million, making it the largest city in Andalusia, the fourth-largest city in Spain and the 30th most populous municipality in the European Union. Its old town, with an area of 4 square kilometres (2 sq mi), contains three UNESCO World Heritage Sites: the Alcázar palace complex, the Cathedral and the General Archive of the Indies.

"NO8DO" is the official motto of Seville, popularly believed to be a rebus signifying the Spanish 'No me ha dejado', meaning "She (Seville) has not abandoned me". The phrase, pronounced with synalepha as 'no-madeja-do', is spelled with an eight in the middle representing the word 'madeja' (skein of wool). Legend states that the title was given by King Alfonso X, who was resident in the city's Alcázar and supported by the citizens when his son, later Sancho IV of Castile, tried to usurp the throne from him.

The emblem is present on Seville's municipal flag, and features on city property such as manhole covers, and Christopher Columbus's tomb in the cathedral.