: A nail protruding from a wall, or an envelope sticking out of a bag. Contextual Variations
While "stick out" is the common conversational equivalent, is often favored in technical or formal writing. PROTRUDE Definition & Meaning - Merriam-Webster protrude
: Teeth or a jaw that sticks out, or medical conditions like a "protruding disc" in the spine. : A nail protruding from a wall, or