From Longman Dictionary of Contemporary Englishlaptoplap‧top /ˈlæptɒp $ -tɑːp/ ●●● S2 W2 (also laptop computer) noun [countable] 
TDa small computer that you can carry with you → desktop
TDa small computer that you can carry with you → desktopExamples from the Corpus
laptop• His main means of communicating with the rest of the world is a laptop computer with a speech synthesiser.• Apparently it's OEMing somebody's Mbus machine and are talking about a portable that's not a laptop.• Talk to anyone who lifts briefcases and laptops from cars in parking lots.• GRiD also holds the Patent on the idea of a fold-up screen which is part of every laptop, or notebook computer.• Her computer breaks down on deadline; amiably, he offers the loan of his laptop.• This would include a new laptop due out before Christmas and priced around $ 2,500.• Her boss's laptop got stolen from her car.• Think laptops, stereo equipment and climbing gear.From Longman Business Dictionarylaptoplap‧top /ˈlæptɒp-tɑːp/ (also laptop computer) noun [countable]COMPUTINGTRAVEL a small computer that you can carry with you and use when you are travellingAs the technology becomes cheaper, we see lower prices for laptops. → see also notebook, palmtop 