英文字典在线查询

Merriam-Webster以define为例（下面是查询结果）：defineOne entry found for define. Main Entry: de·fine Pronunciation: di-'fInFunction: verbInflected Form(s): de·fined; de·fin·ingEtymology: Middle English, from Latin definire, from de- + finire to limit, end, from finis boundary, endtransitive verb1 a : to determine or identify the essential qualities or meaning of b : to discover and set forth the meaning of (as a word) c : to create on a computer 2 a : to fix or mark the limits of : DEMARCATE b : to make distinct, clear, or detailed especially in outline 3 : CHARACTERIZE, DISTINGUISH intransitive verb : to make a definition - de·fine·ment /-'fIn-m&nt/ noun - de·fin·er /-'fI-n&r/ noun 其中：[Etymology: Middle English, from Latin definire, from de- + finire to limit, end, from finis boundary, end]就是语源了！