n.
swiftness, velocity
1) to build up, pick up; maintain ~
2) to reach a ~ (to reach cruising ~; to reach a ~ of one hundred miles an hour)
3) breakneck, breathtaking, high, lightning; cruising; deliberate, full, top; low; moderate; steady; supersonic ~
4) a burst of ~
5) at a certain ~ (at top ~)
6) ( misc. ) full ~ ahead!
amphetamine
(slang)
7) to shoot; snort ~