It is impossible that only one person should know the meaning of a word in English; a word has meaning in English; a word has meaning in English because English speakers basically agree on its meaning.

Meaning Of A Word

This concerns the content that a word or phrase conveys, or what is communicated by the language, signs, and symbols used.

English Speakers

Individuals who use English as their primary language for communication, either as native speakers or as an additional language.

Agree

To have the same opinion or view about something; to consent or approve.