1. a slender, swift dog breed with a long narrow head, used historically for hunting and now often for racing
2. a long-distance bus service or coach (often capitalized as a brand name)
Usage: informal; chiefly North American

Examples

• The greyhound raced across the field with incredible speed.
• She took a greyhound bus from New York to Boston.
• Greyhounds are known for their gentle temperament despite their athletic build.
• The dog shelter had several retired greyhounds available for adoption.
• We booked tickets on a greyhound for our cross-country trip.