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"Las piernas" is a form of "pierna", a noun which is often translated as "leg". "Los brazos" is a form of "brazo", a noun which is often translated as "arm". Learn more about the difference between "las piernas" and "los brazos" below.
la pierna(
pyehr
-
nah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (anatomy)
a. leg (of person or animal)
Me lesioné la pierna jugando al fútbol.I injured my leg playing soccer.
Cuando se rompió la pierna, tuvieron que sacrificar el caballo.When the horse broke its leg, it had to be put down.
2. (culinary)
3. (typography)
a. stroke
La letra k tiene una pierna que desciende hacia la derecha.Letter k has a stroke which descends to the right.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
An adjective is a word that describes a noun (e.g., the big dog).
6. (colloquial) (willing) (River Plate)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
el brazo(
brah
-
soh
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
1. (anatomy)
a. arm
Aunque perdió un brazo en la guerra, sigue entrenando.Even though she lost an arm in the war, she's still training.
a. front leg
El perro tenía una herida en su brazo que el veterinario tuvo que cerrar con puntos de sutura.The dog had a wound on its front leg that the veterinarian had to close up with stitches.
3. (nature)
a. branch
Los brazos del río se extienden a cuatro países diferentes.The branches of the river extend to four different countries.
a. arm
El brazo de la grúa se rompió por el peso de la carga.The arm of the crane snapped from the weight of the load.