- dung of seabirds, found especially on islands off the coast of Peru: it is used as a fertilizer
- any natural or artificial fertilizer resembling this, as bat dung
Origin of guanoSpanish from Quechua huanu, dung
A substance composed chiefly of the dung of seabirds or bats, accumulated along certain coastal areas or in caves and used as fertilizer.
Origin of guanoSpanish from Quechua huanu dung
- Dung from a sea bird or from a bat.