Any fruit of a plant of the botanical genus Capsicum, which has a spicy/burning flavour because it contains capsaicin. (Not all chili peppers are particularly spicy, but all true chili peppers contain some capsaicin, in contrast to e.g. the bell pepper, which is not a true chili pepper and does not.)
A spice consisting of the light-colored seed of the black pepper fruit without the dark-colored pulp and skin. Used as a spice in light colored foods such as cream sauces.