1. lanolin a yellow viscous animal oil extracted from wool
  2. ledger line a short line
  3. leger line a short line
  4. load line waterlines to show the level the water should reach when the ship is properly loaded
  5. love line a crease on the palm
  6. log line a knotted cord that runs out from a reel to a piece of wood that is attached to it
  7. legionella the motile aerobic rod-shaped Gram-negative bacterium that thrives in central heating and air conditioning systems and can cause Legionnaires' disease
  8. landline a telephone line that travels over terrestrial circuits
  9. life line a crease on the palm
  10. land line a telephone line that travels over terrestrial circuits
  11. mainline inject into the vein
  12. lead line (nautical) plumb line for determining depth
  13. hot line a direct telephone line between two officials
  14. lemonlike tasting sour like a lemon
  15. lazuline a light shade of blue
  16. loop-line a railway branch line that branches from the trunk line and then rejoins it later on
  17. Heinlein United States writer of science fiction (1907-1988)
  18. fall in line agree on (a position)
  19. keep in line control or influence skillfully, often to one's advantage
  20. telephone line the wire that carries telegraph and telephone signals