This is the 9947th most frequent Spanish word.
bulto
"Bulto" means "bag, lump, bulge, or package," depending on context.
In this sentence, 'bulto' refers to a physical prominence or irregularity in a surface, which is often translated as 'lump' or a similar term.
Hay un bulto extraño en la pared.
There is a strange lump on the wall.
Here, 'bulto' denotes a package or wrapped item, emphasizing its function as a container or carrying item.
Llevo un bulto grande lleno de libros a la escuela.
I carry a large bundle full of books to school.
In this context, 'bulto' means a vague or indistinct form, abstractly perceived in a low-light environment.