This term is often used in a metaphorical sense to refer to death, due to the traditional image of Death carrying a scythe (guadaña in Spanish). It is not a common slang term, but more of a literary or poetic term.
Examples
- Spanish: Cuando llega la guadaña, no hay nada que se pueda hacer.
- English: When the scythe (death) comes, there is nothing you can do.