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addaword.gifdefinition of LiDAR

light detection and ranging: a method of three-dimensional mapping using a laser mounted on a plane to scan the terrain
LiDAR has the potential to show many archaeological features previously hidden from aerial reconnaissance by woodland cover (Figure 1).
Submitted from United Kingdom on 23/08/2012 17:11:00
Definition of LiDAR from the Open Dictionary – a public resource hosted by Macmillan English Dictionary Online

dark pool

a method of financial trading in which share prices are hidden and not openly available to the public

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bottom gear

the gear that you use for driving a vehicle very slowly