pat down
1. To tamp down the surface of some substance in order to smooth, flatten, or pack it. In this usage, a noun or pronoun can be used between "pat" and "down." Lightly pat the soil down after planting the seed, leaving it loose enough for water to get through. Pat down the silicone mixture around the person's face so that the mold will be able to capture all their unique details.
2. To put one's hands on someone's body in order to search them for something, especially weaponry or prohibited substances. In this usage, a noun or pronoun can be used between "pat" and "down." The bouncer is patting down everyone to make sure no one smuggles booze or drugs into the concert. The officer patted me down even through I told him I didn't have a gun on me.