The horse balked at the jump.
She balked at the very idea of compromise.
An example of something that may balk your chances to finish college is a refusal by a lender to provide financial aid.
An example of something at which someone might balk is cleaning up a mess that he did not make.
An example of an animal that may balk is a mule.
Sick he is, and keeps his bed, and balks his meat.
Nor doth he any creature balk, / But lays on all he meeteth.
The horse balked.
To balk expectation.