The term 'very hot chilli pepper' can be summarized by the 8-letter crossword solution 'jalapeno'. Jalapenos are a type of chili pepper that is commonly used in Mexican and Tex-Mex cuisine. They are usually medium-sized and have a bright green color when fresh, but they can also be found in red and yellow varieties. The jalapeno pepper has a very distinct flavor and is known for its heat, which can range from mild to very hot.