La del mono: Masturbation

La doce: (The "twelfth") The group of Boca Juniors soccer team fans. They are called like this, because their support is so important, that they become one more player, i.e., number 12.

La (Ciudad) Feliz: ("The Happy City") Name given to the city of Mar del Plata (important seaside resort on the Atlantic Ocean

La mar en coche: Phrase meaning everything, or anything

La papa: (Literally, the potato) Cancer (disease)

Labia: Oratory skills

Laburar: Work (slang)

Lágrima: Cup of milk with a drop of coffee

Lanas: Hair, generally long and used for men

Langa: Handsome man, suitor (Galán "al vesre")

Largar: Quit an activity, or interrupt a relationship

Las papas queman: (Literally, the potatoes burn) The situation has become dangerous

Lastrar: Eat (slang)

Laucha: Mouse

Lenteja: 1) Small; 2) Lentil

Lentes: Glasses, spectacles

Leproso: (Literally, leper) Newell's Old Boys’ soccer team fan

Levantar el muerto: One person having to pay for something for which may people must pay

Levantar la perdiz: To be indiscreet, to alert about something, to spill the beans

Levantar: Pick up someone, seduce someone of the opposite sex

Licuado: Drink made of milled fruit, and water or milk

Lienzos: Trousers (slang)

Ligar: Be lucky about something

Linyera: Homeless, bum

Liquidar: Annihilate

Llamado: Phone call.

Llamar: To phone

Llenar la cocina de humo: (Literally, to fill the kitchen with smoke) Make a woman pregnant

Lo más pancho: Expression meaning that someone is too serene in face of a situation requiring more action

Locro: Typical dish: kind of stew made with beans, beef, sometimes pork legs, wheat, potatoes, onions, garlic, peppers, bacon, among other ingredients

Lolas: Female breasts

Lomito: Thinly sliced beef warm sandwich

Lomo: 1) Beef steak (very tender). It is obtained from the animal’s back. By extension, a muscular person’s body; 2) Worker’s body

Lompa: Trousers (pantalón "al vesre", omitting the first syllable)

Loro: (Literally, parrot) Ugly woman, generally a spinster

Loto: Lotto

Luca, una: One thousand pesos ("una luca verde" (one green "luca"): 1.000 US dollars)

Luneta: Car rear window

Lunfardo: Popular Argentine argot, as Slang in USA, or Cockney in England