Sentence:  Some call me witch, / And being ignorant of myself, they go / About to teach me how to be one; urging / That my bad tongue—by their bad usage made so— / <WSD>Forspeaks</WSD> their cattle, doth bewitch their corn, / Themselves, their servants, and their babes at nurse. 
Meaning of the word marked with <WSD> tags:  To bewitch, to charm.