IPA: /kɔːrˈdɪl.jə.rə/
KK: /kɔrˈdɪl.ər.ə/
A large series of mountains that are connected together, often forming the main mountain system of a continent.
The Andes is a famous cordillera in South America.
Cordillera is derived from the Spanish word 'cordillera', which comes from 'cordilla' (meaning a small rope or cord) and the suffix '-era' (indicating a collective or group). The term originally referred to a chain or series of mountains, likening them to a cord or rope that connects them together.
Imagine a 'cord' that ties together a series of mountains — that's why 'cordillera' refers to a mountain range.