This is the 2615th most frequent Spanish word.
definición
Definition: The meaning or explanation of a word, concept, or term.
Here, 'definición' is used in its literal sense as the explanation or meaning of a term.
La definición de esta palabra es compleja.
The definition of this word is complex.
In this sentence, 'definición' is used metaphorically to describe the act of outlining or specifying the details of the project.
La definición del proyecto requiere más detalle.
The definition of the project requires more detail.
Here, 'definición' is employed to refer to the clarity or precision provided by defining a subject.