by the way
idiomPart ofby
by the way — idiom
1. used before adding a small piece of information that is not the main topic of wh
1.idiom
Definition
used before adding a small piece of information that is not the main topic of what you are saying.
Example
By the way, Marcus called earlier and asked about the weekend trip.
Lina, by the way, your brother left her jacket on our sofa.