1. drilling bit a bit used in drilling for oil
  2. drilling pipe a series of tubes (joined by screwed collars) that connect a drilling platform to the drilling bit; rotates the bit and supplies drilling mud
  3. drilling mud a mixture of clays and chemicals and water
  4. drilling rig rig used in drilling for oil or gas
  5. drilling fluid a mixture of clays and chemicals and water
  6. drilling the act of drilling
  7. drinking bout a long period of drinking
  8. drill bit a bit used in drilling for oil
  9. darling pea either of two Australian plants of the genus Swainsona that are poisonous to sheep
  10. rolling pin utensil consisting of a cylinder with a handle at each end
  11. riding bitt one of the large bitts used to secure the cable of a dropped anchor
  12. Trilling United States literary critic (1905-1975)
  13. darkling beetle sluggish hard-bodied black terrestrial weevil whose larvae feed on e.g. decaying plant material or grain
  14. travelling bag a portable rectangular container for carrying clothes
  15. trilingual using or knowing three languages
  16. thrilling causing a surge of emotion or excitement
  17. trolling angling by drawing a baited line through the water
  18. sailing boat a small sailing vessel; usually with a single mast
  19. riding habit attire that is typically worn by a horseback rider
  20. rallying point a point or principle on which scattered or opposing groups can come together