WordWeb Online

1. Extend out in space
   "A single rock protrudes from the cliff";
   - stick out, jut out, jut, project
    
2. Bulge outward
   "His eyes protruded";
   - start, pop, pop out, bulge, bulge out, bug out [US, informal], come out
    
3. Swell or protrude outwards
   "His stomach protruded after the huge meal";
   - bulge, pouch

Derived forms: protruded, protrudes, protruding

Type of: change form, change shape, deform