Containing or producing guano; related to the deposits of seabird droppings used as fertilizer.
From Spanish guano, borrowed from Quechua (Inca language) huanu meaning 'dung'; plus Latin -ferous meaning 'bearing' or 'producing'.
Guano sounds silly until you realize that seabird poop became one of the most valuable trade commodities of the 1800s—countries went to war over guaniferous islands because the fertilizer was worth fortunes.
Complete word intelligence in one call. Free tier — 50 lookups/day.