pentagonpentagon /ˈpɛntəˌgɑn/ noun [countable] 
math, geometry a flat shape with five sides—pentagonal /pɛnˈtægənl/ adjective
math, geometry a flat shape with five sides—pentagonal /pɛnˈtægənl/ adjective- shellac
- shellacking
- Shelley, Mary Wollstonecraft
- Shelley, Percy Bysshe
- shellfire
- shellfish
- shell game
- shelling
- shell shock
- shell-shocked
- shelter
- sheltered
- shelve
- shelves
- shelving
- Shenandoah, the
- Shenandoah Valley, the
- shenanigans
- Shepard, Alan
- shepherd
- shepherdess
- sherbert
- sherbet
- Sheridan, Richard Brinsley
- sheriff