This is the 5505th most frequent Spanish word.
pedacito
A small piece or tiny fragment.
In this sentence, 'pedacito' conveys a small portion or a tiny piece of something, in this case, the cake.
Quiero un pedacito de pastel, por favor.
I want a little piece of cake, please.
Here, 'pedacito' refers to one of the small pieces that make up the whole puzzle.
En el rompecabezas falta un pedacito.
A little piece is missing from the puzzle.
The word 'pedacito' in this example is used to refer to a small fragment or sample of fabric.