air tube
noun
1A trachea or tracheole in an insect.
2The inner tube of a pneumatic tyre.
Origin
Late 17th century; earliest use found in Nehemiah Grew (a1641–1712), botanist and physician.
- clearance
- clearance order
- clearance sale
- clearcole
- clear-cut
- clearer
- clear-eyed
- clear-fell
- Clearfield
- clear-headed
- clear-headedness
- clearing
- clearing bank
- clearing house
- clearing sale
- clearly
- clearness
- clear off (or out)
- clear one's lines
- clear one's throat
- clear-out
- clear-sighted
- clear-sightedness
- clearskin
- clear something out