VERB
闡明;規定;限定;使明確
If you define something, you show, describe, or state clearly what it is and what its limits are, or what it is like.
例句
We were unable to define what exactly was wrong with him...
我們說不清楚他到底哪里不對勁。
He was asked to define his concept of cool.
他被要求說明自己關于“酷”的定義。