Eix
Eix is a Catalan noun meaning axis or main line. In general use, it refers to a central line, spine, or framework around which something is organized. The term is common in geography, urban planning, and mathematics, where it denotes a principal route, direction, or reference line.
In the context of Barcelona, l’Eixample (often shortened to “el Eix” by locals) is a well-known urban
L’Eixample is renowned for its Modernisme architecture and urban character. Notable landmarks include Gaudí’s Casa Batlló
Beyond Barcelona, the word eix is used in Catalan-speaking regions to describe principal urban axes or routes.