adj.
1.Essential to
success.
2. Tending to be successful in difficult situations.
v.intr.
To attempt to grasp or seize.
v.tr.
To grasp and hold tightly.
n.
1. A grasp or a
hand in the act of grasping.
2. Control or
power.
3. A critical situation.
4. A device for gripping and holding (e.g. in a motor vehicle).