1. language learning learning to use a language
  2. sleep-learning teaching during sleep
  3. enlightening tending to increase knowledge or dissipate ignorance
  4. unenlightening failing to inform or clarify
  5. undiscerning lacking discernment
  6. rote learning memorization by repetition
  7. enlivening giving spirit and vivacity
  8. annual ring an annual formation of wood in plants as they grow
  9. inclining bending forward
  10. line drawing a drawing of the outlines of forms or objects
  11. ingraining teaching or impressing upon the mind by frequent instruction or repetition
  12. unalarming not alarming; assuaging alarm
  13. inguinal hernia hernia in which a loop of intestine enters the inguinal canal; the most common type of hernia in males
  14. learning the cognitive process of acquiring skill or knowledge
  15. airplane landing landing an aircraft
  16. Inland Revenue a board of the British government that administers and collects major direct taxes
  17. clean-burning leaving little contamination while consuming fuel
  18. line engraving engraving consisting of a block that has been etched or engraved
  19. vocational training training for a specific vocation in industry or agriculture or trade
  20. line of reasoning a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning