This is the 3640th most frequent Spanish word.
muelle
"Dock," "pier," or "spring" (depending on context).
In this sentence, 'muelle' refers to a structure on the waterfront where ships and boats are docked or moored.
El barco está amarrado en el muelle.
The ship is docked at the pier.
Here, 'muelle' signifies a mechanical spring, like the one found in a clock or watch.
El muelle del reloj necesita un ajuste.
The watch spring needs an adjustment.
In this context, 'muelle' is used to describe a part of a mattress or bed that provides elasticity, typically a spring.