1. telephone line the wire that carries telegraph and telephone signals
  2. phone line a telephone connection
  3. theophylline a colorless crystalline alkaloid derived from tea leaves or made synthetically; used in medicine as a bronchial dilator
  4. tefillin (Judaism) either of two small leather cases containing texts from the Hebrew Scriptures (known collectively as tefillin); traditionally worn (on the forehead and the left arm) by Jewish men during morning prayer
  5. dunlin small common sandpiper that breeds in northern or Arctic regions and winters in southern United States or Mediterranean regions
  6. tv-antenna an omnidirectional antenna tuned to the broadcast frequencies assigned to television
  7. trotline a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys)
  8. towline (nautical) a rope used in towing
  9. online connected to a computer network or accessible by computer
  10. vanillin a crystalline compound found in vanilla beans and some balsam resins; used in perfumes and flavorings
  11. adrenaline a secretion in response to stress, stimulating nerve action
  12. crinoline a stiff coarse fabric used to stiffen hats or clothing
  13. toll line a telephone line for long-distance calls
  14. touchline either of the sidelines in soccer or rugby
  15. trap line a line or series of traps
  16. tree line line marking the upper limit of tree growth in mountains or northern latitudes
  17. trip line a light rope used in lumbering to free a dog hook from a log at a distance
  18. dropline a headline with the top line flush left and succeeding lines indented to the right
  19. mainline inject into the vein
  20. tag line the point of a joke or humorous story

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