Mon patron is "my boss" in French. In French, the word is never used to mean 'customer'.
The phrase 'mon homme' means my man. In the word-by-word translation, the possessive adjective 'mon ' means 'my'. And the noun 'homme' means 'man'.
Mon gars means something like guy, chap
It means "my little" as in "my little one".
mon (+ masculine noun) or ma (+ feminine noun)
mon
What does mon mean
It is actually two french words. Mon Arche. It mean my arch. Referring to the king of a nation.
If you mean "mon dessin", it means "my drawing"
toujours dans mon propre petit monde means 'always in my own small word' in English.
Mon petit tresor
mon amour = my love