What is the meaning of the word "tahakum" linguistically and legally, and does every dispute settlement with a Taghut fall under the designation of "tahakum," or is there a detailed explanation?

Resorting to Taghut means litigating before him, and any resolution of disputes by him is forbidden, unless a person is compelled to do so and finds no one else to obtain his right and resolve the dispute. In that case, there is no blame upon him.