The top tube of a bicycle frame.
The top of the goal structure.
Any transverse bar or piece, such as a bar across a door, or the iron bar or stock which passes through the shank of an anchor.
To mark with a pattern of transverse bars.
A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.
A snorkel parka.
A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.
To use a snorkel.