| No. | Item | Definition |
|---|---|---|
| 1. | agency | means through which acts |
| 2. | airway | passage for air movement |
| 3. | aqueduct | structure carrying water across |
| 4. | artery | main route for movement |
| 5. | avenue | means of approach or access |
| 6. | band | range of transmission frequencies |
| 7. | bore | interior channel of a tube |
| 8. | broadcast | transmitted program stream |
| 9. | brook | small natural stream |
| 10. | bypass | alternative route around blockage |
| 11. | cable | insulated line for transmission |
| 12. | canal | artificial water passage |
| 13. | carrier | thing that conveys something |
| 14. | conduit | means of conveying something |
| 15. | connection | link enabling transfer or contact |
| 16. | corridor | passage or route between places |
| 17. | course | directed path or route |
| 18. | culvert | drainage passage under a road |
| 19. | cut | manmade passage through land |
| 20. | delivery line | line carrying supplied material |
| 21. | discharge | release or outflow |
| 22. | distribution line | line carrying distributed service |
| 23. | drain | channel carrying away liquid |
| 24. | duct | tube or passage for flow |
| 25. | ductwork | system of air channels |
| 26. | feeder | supply line into system |
| 27. | fiber | optical transmission line |
| 28. | flow path | route taken by flow |
| 29. | flume | artificial channel for water |
| 30. | forum | place for discussion or expression |
| 31. | funnel | means of directing flow |
| 32. | furrow | long narrow trench or groove |
| 33. | gateway | means of access or entry |
| 34. | grid | interconnected distribution system |
| 35. | groove | long narrow channel or cut |
| 36. | guideway | track or channel for guidance |
| 37. | gutter | shallow channel for runoff |
| 38. | hose | flexible tube for flow |
| 39. | hotline | direct communication line |
| 40. | inlet | narrow water passage inland |
| 41. | instrument | means used to achieve |
| 42. | interface | point of interaction or transfer |
| 43. | lane | narrow route or passage |
| 44. | lead | connecting wire or route |
| 45. | line | means of communication or supply |
| 46. | link | connecting means or route |
| 47. | lock cut | canal section near a lock |
| 48. | main | principal pipe or conduit |
| 49. | means | method or instrumentality |
| 50. | mechanism | process or means of operation |
| 51. | medium | means of communication or transfer |
| 52. | messenger | means of carrying information |
| 53. | millrace | channel carrying water to mill |
| 54. | mode | particular means or method |
| 55. | narrows | constricted part of waterway |
| 56. | network | system of connected routes |
| 57. | news outlet | organization distributing news |
| 58. | outflow | stream flowing out |
| 59. | outlet | means of release or expression |
| 60. | pass | narrow route through terrain |
| 61. | passage | way through or along |
| 62. | passageway | long narrow route through |
| 63. | pathway | route for movement or flow |
| 64. | pipe | tube carrying fluid or gas |
| 65. | pipeline | channel for transporting supplies |
| 66. | platform | medium for publishing content |
| 67. | race | water channel driving machinery |
| 68. | raceway | channel carrying water flow |
| 69. | reach | stretch of river channel |
| 70. | relay | system passing something along |
| 71. | route | way or course for passage |
| 72. | run | course taken by something |
| 73. | runnel | small narrow stream or channel |
| 74. | sewer | underground waste channel |
| 75. | slot | narrow opening or channel |
| 76. | sluice | water channel with gate |
| 77. | sluiceway | channel for controlled water flow |
| 78. | spillway | overflow channel for water |
| 79. | spout | outlet channel for liquid |
| 80. | station | broadcast outlet or frequency |
| 81. | storm drain | drainage channel for rainwater |
| 82. | thoroughfare | main route for passage |
| 83. | throughway | route allowing passage through |
| 84. | track | path or line followed |
| 85. | transit line | route for transport service |
| 86. | transmitter | device sending signals outward |
| 87. | trench | long narrow channel or cut |
| 88. | trough | long narrow channel-like container |
| 89. | tube | hollow channel for passage |
| 90. | vehicle | means for expressing ideas |
| 91. | vein | channel carrying something through |
| 92. | vent | means of emotional release |
| 93. | venue | place or medium for expression |
| 94. | vessel | tube carrying bodily fluid |
| 95. | voice | means of expression or outlet |
| 96. | watercourse | natural channel for water |
| 97. | waterway | navigable route through water |
| 98. | waveguide | structure guiding electromagnetic waves |
| 99. | way | means or route forward |
| 100. | wire | conductor for signals or power |