1. Very clearly delineated
   "razor-sharp definition" 
2. As sharp as a razor

See also: distinct, sharp

• bearing wall
• bearish
• bearishness
• bearskin
• bearwood
• beast
• beast of burden
• beastie
• beastliness
• beastly
• beat
• beat a dead horse
• beat a retreat
• beat about
• beat about the bush
• beat around the bush
• beat back
• beat down
• beat generation
• beat hollow
• beat in
• beat it
• beat out
• atrazine
• atremble