The “vocabulary” of this dictionary referred to within the definitions of certain collocations are those words serving as headwords for main entries, and distinguished from word combinations (“collocations”) which follow the main part of certain entries. In the XML-tagged version, these headwords are marked by the tags . [ PJC ]

2. A sum or stock of words employed. [ 1913 Webster ]

His vocabulary seems to have been no larger than was necessary for the transaction of business. Macaulay. [ 1913 Webster ]