The Latin L's descent in sound, from Phoenician lamedh through Greek lambda, appears elsewhere in this atlas. Graphically, lambda's sharp angle straightened in Etruscan and Roman hands into the simple right-angle L still used today, one of the more stable letterforms in the alphabet's history; the lowercase l is simply that same angle reduced to a single vertical stroke, among the plainest shapes in the Latin alphabet. Separately, L is one of seven Latin letters that also serves as a Roman numeral, standing for fifty.
Unlike I, V and X, which the standard account derives from tally notches, L's numeral value has no agreed derivation from its shape or sound: one common explanation holds that L is half of the older symbol used for one hundred, split along its vertical axis, though this is not settled with the same confidence as the tally-mark origin of the smaller numerals, and other reconstructions of the early Roman numeral system differ. Whatever its origin, the numeral use is a later, purely notational overlay on the letter and carries no relation to lamedh's Hebrew meaning of an ox-goad or to any gematria-style tradition covered elsewhere in this atlas for the Hebrew and Greek alphabets.