noun, feminine/ˈplasta/plural: plastas
lump, soft mass of matter (usually soft, thick and sticky); flattened object; plasticine, modelling clay; something of low quality; annoying or stupid person
“una plasta de dulce de leche a las gafas. Y otra del talón.” — A lump of dulce de leche on his glasses. Another on his heel.
From plaste, from Ancient Greek πλαστή (plastḗ), from πλαστός (plastós, “artificial; false, fictitious”); from the same source as πλᾰστῐκός (plăstĭkós), whence English plastic. Compare English plastid.