*de·fine/dɪ`faɪn; dɪˈfaɪn/ v [T] 1 to say exactly what something means or describe exactly what something is like 给…下定义; 准确地描述: It's hard to define what makes a good manager. 究竟是哪些因素造就成一名优秀的经理，这很难说得清。 2 to clearly show the limits or shape of something 标明…界限，显出…轮廓; 明确规定: a clearly defined budget 明确限定的预算