What Does It Mean?

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From our dictionary:
per•emp•to•ry

(pu-remp'tu-rē, per'ump-tôr"ē, -tōr"ē),
adj.
1. leaving no opportunity for denial or refusal; imperative: a peremptory command.
2. imperious or dictatorial.
3. positive or assertive in speech, tone, manner, etc.
4. Law.
a. that precludes or does not admit of debate, question, etc.: a peremptory edict.
b. decisive or final.
c. in which a command is absolute and unconditional: a peremptory writ.