If something juts out, it sticks out above or beyond a surface. The northern end of the island juts out like a long, thin finger into the sea = protrude
If you jut a part of your body, especially your chin, or if it juts, you push it forward in an aggressive or determined way. His jaw jutted stubbornly forward; he would not be denied Gwen jutted her chin forward and did not answer the teacher Ken's jaw jutted with determination
extend out or project in space; "His sharp nose jutted out"; "A single rock sticks out from the cliff"
To shoot out or forward; to project beyond the main body; as, the jutting part of a building