What is a catty remark?

Typically remarks are addressed to the person to whom you are speaking, whether to an individual, a small group of people, or an entire auditorium.

comment, statement

BARB -A remark that hurts the feelings of the person on the receiving end. It "cuts" the emotions like a knife would cut the flesh. It wounds.

shark, dark, hark, bark, mark, park, stark, lark

To say casually, as in making a comment.