The body, yielding,
Bending
Softening
To allow for passage for response or touch.
The body here is the public, I expect
But the image is so corporeal,
So like a pliant moving living person
Moving with the will of its head.
This is, of course, what Laertes is worried his sister’s body is doing –
Yielding to the willful head of state,
Doing everything he asks
Bending toward his desire.