lemon-lime noun 2adjective 1forms 1 noun2 •a variety of citrus fruitThe Lemon Lime, or Sweet Lemon, is larger than the preceding, of an oblong roundish shape, with protuberances at the point, which is in some cases also puckered. — 1858 •any lemon-lime drink adjective1 •that contains a mixture of lemons and limes formslemon-limes