1. to pin down; to hold down; to press down; to hold in place; to hold steady
also written as 圧さえる
2. to cover (esp. a part of one's body with one's hand); to clutch (a body part in pain); to press (a body part)
4. to grasp (a point); to comprehend
5. to reserve (time, space, or availability); to hold; to block off (a schedule); to secure; to pin down (a date)