Littered

Phoebe is asking Wilfred if he has provided straw for all the prisoners’ beds. On a more literate plane, Knight (178) finds that before 1828 one of the functions of the Tower, for several centuries, was to keep wild animals. In the context, however, it would seem more likely that Phoebe had the prisoners in mind.

Context: 
The wild beasts all littered down?
Act: 
Act I