Where does “laguinho” come from?

laguinho (Portuguese) comes from Portuguese lago, from Old Portuguese lago, from Latin lacus, from New Latin lacrimalis, from Latin lācrima, from Old Latin dacrima, from Proto-Italic *d(r)(k)akrunā, from Proto-Indo-European dáḱru- — eye bitter.

Ancestry of “laguinho”, step by step

StepLanguageWordMeaning
1Portugueselagolake
2Old Portugueselago
3Latinlacusa lake, pond, basin; reservoir; a tank, tub, vat,...
4New Latinlacrimalis
5Latinlācrimaa tear drop of liquid from crying
6Old Latindacrimatear
7Proto-Italic*d(r)(k)akrunā
8Proto-Indo-Europeandáḱru-tears; tear
9Proto-Indo-Europeandr̥ḱ-h₂eḱru-eye bitter
Every word from Proto-Indo-European dr̥ḱ-h₂eḱru-Every word from Proto-Indo-European dáḱru-Every word from Proto-Italic *d(r)(k)akrunā