liter, litre, l, cubic decimeter, cubic decimetre: a metric unit of capacity, formerly defined as the volume of one kilogram of pure water under standard conditions; now equal to 1,000 cubic centimeters (or approximately 1.75 pints)
fifty, 50, L: the cardinal number that is the product of ten and five
lambert, L: a cgs unit of illumination equal to the brightness of a perfectly diffusing surface that emits or reflects one lumen per square centimeter
