streamline /ˈstriːmlʌɪn /
▸ verb [with obj.]
1 (usu. as adj. streamlined) design or provide with a form that presents very little resistance to a flow of air or water, increasing speed and ease of movement:
streamlined passenger trains.
2 make (an organization or system) more efficient and effective by employing faster or simpler working methods:
the company streamlined its operations by removing whole layers of management.
▸ noun a line along which the flow of a moving fluid is least turbulent.
▸ adjective
1 (of fluid flow) free from turbulence.
2 dated having a streamlined shape:
a streamline aeroplane.