This is the 2247th most frequent Spanish word.
llave
Key.
In this sentence, 'llave' refers to a physical key used to unlock a door.
Necesito la llave para abrir la puerta.
I need the key to open the door.
Here, 'llave' is used metaphorically to signify a crucial element or solution.
Esa idea fue la llave para resolver el problema.
That idea was the key to solving the problem.
In this context, 'llave' refers to a faucet or valve that controls the flow of water.