Castrapo (a portmanteau of castelán and trapo, meaning rag[1]) is a term used in the region of Galicia to refer to a local variety of the Castilian language that uses a lot of code-switching, vocabulary, syntax and expressions directly from the Galician language although they do not exist or have equivalents in Standard Castilian.
The Galician language lost its officiality during the era known as the Seculos Escuros (Dark Centuries), and it was no longer studied at schools, used by religious organizations or any administrative entity.
Some Galicianist intellectuals like Manuel María viewed Castrapo as a threat to the Galician language by Castilianization.
In Standard Castilian, it would be Cierra la ventana; in Galician, it would be Pecha a fiestra/ventá/xanela; and in Portuguese, it would be Fecha a janela.
Final unstressed /e/ and /o/ are frequently raised to [i] and [u] in the Castilian that is spoken in rural Galicia.