leche
/ˈlet͡ʃe/ · A2 · noun · f
milk
🥛 leche ~ latte: both from Latin lac/lactem, the root of lactose
Latin lactem became leche in Spanish and latte in Italian; the ct turned into ch, just as noctem gave noche and octo gave ocho. Link it to lactose and lactate. In slang it also turns vulgar, so mind the context.