L2Pronunciation: /ɛl/Translate L | into French | into German | into Italian | into Spanish Definition of L abbreviation (in tables of sports results) games lost. Chemistry laevorotatory:L-tryptophan (L.) Lake, Loch, or Lough (chiefly on maps):L. Ontario large (as a clothes size). British (on a motor vehicle) learner driver. (L.) Linnaeus (as the source of names of animal and plant species):Swallowtail Butterfly Papilio machaon (L., 1758) lire: the San Paolo deal should raise around L1,500bn Luxembourg (international vehicle registration). symbol Chemistry Avogadro’s constant. Physics inductance. L in other Oxford dictionaries Definition of L in the US English dictionary