Definitions
1.verbTo design and construct the contours of a vehicle etc. so as to offer the least resistance to its flow through a fluid.
2.verb(by extension) To simplify or organize a process in order to increase its efficiency.
3.verbTo modernise.
4.adjectiveDesigned to offer little resistance to the flow of fluid, especially by having sleek, graceful lines.
5.adjectiveHaving been made more simple and straight forward.