pat

2. A small, flat piece of something, like butter.

He added a pat of butter to the pan.

3. To hit something lightly with a flat hand.

She patted the dough into a round shape.

4. A light, quick sound made by tapping.

I heard a soft pat on the window.

5. An answer or remark that is too quick and simple, not showing deep thought.

His pat reply did not solve the problem.