To take up a position.
To drop anchor or otherwise moor a ship.
To move quickly from one location to another.
To move about rapidly and nimbly.
To move house (sometimes a sudden move to avoid debts).
To be unstable; to be easily or often moved.
To move a tethered animal to a new, grazing location.
To unpredictably change state for short periods of time.
A particular, unexpected, short lived change of state.
A fluttering or darting movement.