noun
Etymology: Middle English propre name, from propre proper + name
1. : proper noun
2. : a symbol that indicates a logical subject and uniquely designates a logical simple ; specifically : a symbol that designates a sense-datum present and observed at the moment of the utterance of the symbol
only two words which are strictly proper names of particulars, namely, ‘I and this’ — Bertrand Russell
— compare description 1b, incomplete symbol