adj

• (of material or fluid) Solid and firm.
  "Luckily she wasn’t there any more, no one was, when he returned from the Caribbean carnival damp-hatted and soaked through after being caught unprepared by a squall of hard, hot rain."
• (of material or fluid) Solid and firm.
  "This bread is so stale and hard, I can barely cut it."
• (of material or fluid) Solid and firm.
• (of material or fluid) Solid and firm.
  "hard cider, hard lemonade, hard seltzer, hard soda"

adv

• (manner) With much force or effort.
  "He hit the puck hard up the ice."
• (manner) With difficulty.
  "His degree was hard earned."
• (obsolete) So as to raise difficulties.
  "The question is hard set."
• (manner) Compactly.
  "The lake had finally frozen hard."

noun

• (countable, nautical) A firm or paved beach or slope convenient for hauling vessels out of the water.
  "The Monastery's ironworks at Sowley were renowned for centuries but declined with the passing of the 'wooden walls' at Buckler's Hard — a great number of these ships having been built with timber from the Beaulieu Woods […]"
• (countable, motor racing) A tyre whose compound is softer than superhards, and harder than mediums.
• (uncountable, drugs, slang) Crack cocaine.
• (uncountable, slang) Hard labor.
  "The prisoners were sentenced to three years' hard."

verb

• (transitive, obsolete) To make hard, harden.
  "He knows vain men: he sees their harts that hard them In Guiles and Wiles, and will not hee regard them?"