(nautical, aviation) one of two or more lights fitted to a ship or aircraft, which indicate position and direction taken, especially important at night. Internationally recognised colours are red o...

(Zimbabwe) middlemen who buy produce from farmers and mark up the price, generally drastically, for resale

The greasing of something (especially a bearing) in advance of use

(geothermal energy) Initialism of Hot Dry Rock. / Initialism of Humanitarian Daily Ration. / (photography) Initialism of High Dynamic Range.