1. heatstroke collapse caused by exposure to excessive heat
  2. hair stroke a very fine line in writing or printing
  3. hearthstone a stone that forms a hearth
  4. breaststroke a swimming stroke
  5. heartstrings your deepest feelings of love and compassion
  6. hart's-tongue tropical American terrestrial fern with leathery lanceolate fronds; sometimes placed in genus Polybotrya
  7. first strike the initial use of nuclear weapons to attack a country that also has nuclear weapons; considered feasible only when the attacker can destroy the other country's ability to retaliate
  8. headstrong habitually disposed to disobedience and opposition
  9. heart attack a sudden severe instance of abnormal heart function
  10. heart surgeon a specialist in cardiology
  11. heart surgery any surgical procedure involving the heart
  12. hairstreak small butterflies having striped markings under the wings
  13. ground stroke a tennis return made by hitting the ball after it has bounced once
  14. heartsick full of sorrow
  15. horror-struck stricken with horror
  16. short story a brief but fully developed prose narrative
  17. outstroke the stroke of an engine piston moving toward the crankshaft
  18. perestroika an economic policy adopted in the former Soviet Union
  19. breaststroker someone who swims the breaststroke
  20. forehand stroke (sports) a return made with the palm of the hand facing the direction of the stroke (as in tennis or badminton or squash)