|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|a chattering or flighty, light-headed person.|
|1.||a contour on a body that offers the minimum resistance to a gas or liquid flowing around it|
|2.||an imaginary line in a fluid such that the tangent at any point indicates the direction of the velocity of a particle of the fluid at that point|
|3.||to make streamlined|
Note: A “streamlined” design is one in which objects that move through a gas or liquid are shaped to match these lines, and therefore reduce the energy required to produce that motion.