- Ⅰ.L  (also l) ► NOUN (pl. Ls or L's) 1) the twelfth letter of the alphabet. 2) denoting the next after K in a set. 3) the Roman numeral for 50. [ORIGIN: originally a symbol identified with the letter L, because of similarity of form.]Ⅱ.L  ► ABBREVIATION 1) (L.) Lake, Loch, or Lough. 2) large (as a clothes size). 3) Brit. learner driver. 4) lire. 5) (in tables of sports results) lost.
English terms dictionary. 2015.