Term: air passage: a duct that provides ventilation (as in mines)
Broader: duct: an enclosed conduit for a fluid | Unrelated: book: physical objects consisting of a number of pages bound together
Broader: duct: an enclosed conduit for a fluid | Unrelated: green frog: similar to bullfrog; found in or near marshes and ponds; of United States and Canada
Broader: duct: an enclosed conduit for a fluid | Unrelated: tampax: tampon used to absorb menstrual flow
Broader: duct: an enclosed conduit for a fluid | Unrelated: marlinespike: a pointed iron hand tool that is used to separate strands of a rope or cable (as in splicing)
Broader: duct: an enclosed conduit for a fluid | Unrelated: marquee: permanent canopy over an entrance of a hotel etc.
Broader: duct: an enclosed conduit for a fluid | Unrelated: nougat: nuts or fruit pieces in a sugar paste
Broader: duct: an enclosed conduit for a fluid | Unrelated: baby's breath: tall plant with small lance-shaped leaves and numerous tiny white or pink flowers
Broader: duct: an enclosed conduit for a fluid | Unrelated: propylene: a flammable gas obtained by cracking petroleum; used in organic synthesis
Broader: duct: an enclosed conduit for a fluid | Unrelated: mastiff bat: a soft-furred chocolate-brown bat with folded ears and small wings; often runs along the ground
Broader: duct: an enclosed conduit for a fluid | Unrelated: oil: a slippery or viscous liquid or liquefiable substance not miscible with water