kit/kɪt; kɪt/ n [C] 1 a set of things that you use for a particular purpose or activity 〔用于某一目的或活动的〕成套物件，成套工具: a first-aid kit 成套急救用品 2 something that you buy in parts and put together yourself 〔购得的〕成套组合部件: He made the model from a kit. 他用一套元件组装了这个模型。