* General Reference: When we say "local druggist", we are usually referring to the concept of a druggist in our local area in general, not a specific individual. It's like saying "bank", "doctor", or "teacher". We don't usually say "the bank" or "a doctor" unless we're talking about a specific one.
* Implied Definiteness: Even though we're not referring to a specific individual, there's an implied sense of definiteness. "Local druggist" usually suggests that there is a druggist that is known to the speaker and listener, even if they haven't specifically agreed on which one.
When You Would Use an Article:
* Specificity: If you are referring to a specific local druggist, you would use "the". For example: "I went to *the local druggist* on Main Street."
* Indefiniteness: If you are talking about any local druggist, you would use "a". For example: "I need to find *a local druggist* to get a prescription filled."
Let me know if you have any other grammar questions!