* Meaning: A feeling or guess: "I had a hunch that he was lying."
* Meaning: To bend or raise (something): "He hunched his shoulders against the cold." "The cat hunched its back, preparing to strike."
* Meaning: A rounded protuberance: "The hump on the camel's back is called a hunch." (This usage is less common)
Therefore, the best way to use "hunch" in a sentence depends on the intended meaning.