1. Any igneous rock with crystals embedded in a finer groundmass of minerals
   - porphyry

Type of: igneous rock

• horse-race
• horse-trade
• horse-trail
• horseback
• horseback rider
• horseback riding
• horsebean
• horsebox
• horsecar
• horsecloth
• horsefish
• horseflesh
• horsefly
• horsefly weed
• horsehair
• horsehair lichen
• horsehair wig
• horsehead
• horsehide
• horselaugh
• horseleech
• horseless
• horseless carriage
• horseman
• horsemanship