Guaro
Cheap sugarcane liquor — the default spirit of Honduras and most of Central America.
Related lesson: Honduran Spanish: A Survival Guide.
Hear it in context
Trajeron una botella de guaro y unas chelas para la playa.
They brought a bottle of cane spirit and some beers for the beach.
No mezclés guaro con cerveza, te va a ir mal.
Don't mix guaro with beer — you'll regret it.
El guaro barato es el que más duele al día siguiente.
Cheap guaro is the kind that hurts most the next day.
What It Actually Means
Guaro is spirit distilled from sugarcane — clear, strong, cheap, and drunk from Honduras down through the isthmus. In practice the word covers two things: the industrial bottled product sold in every pulpería, and, loosely, hard liquor in general, so that andar en el guaro means being on the drink whatever is actually in the glass. There is also the unlicensed home-distilled version, guaro de contrabando or cususa in Honduras, which is a different and riskier proposition.
Where It Comes From
Almost certainly from guarapo, the fermented juice pressed from sugarcane — a word Spanish took up in the Caribbean and whose own origin the Real Academia records as uncertain, with African and Amerindian sources both proposed. Guaro then looks like a clipped, everyday form of it. The clipping is the well-supported part; the ancestry of guarapo itself is genuinely open.
How Natives Use It
Informally, and well beyond Honduras. The same word means the same thing in Nicaragua and Costa Rica — in Costa Rica it is close to a national emblem, with a state-produced brand behind it — as well as in El Salvador and parts of Colombia and Ecuador. So it is a Central American word with a wide passport, not a Honduran secret. Derivatives: guarero (a heavy drinker), guarear (to drink), guaro con Coca (the standard mixer), and it pairs naturally with chela for beer.
Common Pitfall
Two. First, class: guaro names the cheap end on purpose, so offering someone un guaro when you mean a decent rum or whisky slightly insults the bottle — say un trago instead. Second, the home-distilled stuff is not a picturesque local experience but an occasional cause of methanol poisoning; drink the bottled kind. In Spain, meanwhile, the word means nothing at all, and you will want orujo or aguardiente.