The term COR ANGLAIS COUSIN is a musical instrument, and the crossword solution for it is OBOE, which is a four-letter word. The OBOE is a double reed woodwind instrument that is part of the larger family of woodwind instruments. It is known for its distinctive tone and is used in classical, jazz, and popular music. It is also related to the cor anglais, which is a larger version of the OBOE, and the cousin is a smaller version of the OBOE.