1. A quad with a square body
   "since 'em quad' is hard to distinguish from 'en quad', printers sometimes called it a 'mutton quad'"
   - em, mutton quad

Type of: area unit, square measure

• hard-and-fast
• hard-baked
• hard-bitten
• hard-boiled
• hard-boiled egg
• hard-cooked egg
• hard-fought
• hard-hitting
• hard-nosed
• hard-of-hearing
• hard-on
• hard-pressed
• hard-shell
• hard-shell clam
• hard-shell crab
• hard-shelled
• hard-skinned puffball
• hard-to-please
• hard-wearing
• hard-won
• hardback
• hardbacked
• hardbake
• hardball
• hardboard