This is the 3592nd most frequent Spanish word.
limón
Lemon or lime (a citrus fruit).
Here, 'limón' refers to the fruit 'lemon', used literally as an item to add flavor to a beverage.
¿Puedes pasarme el limón para mi té?
Can you pass me the lemon for my tea?
In this case, 'limón' is used metaphorically to describe a specific shade of yellow, one that resembles the color of a lemon.
El color de esa flor es un amarillo limón.
The color of that flower is a lemon yellow.
Here, 'limón' is used in a sensory context, describing the specific flavor associated with lemons.