cosa, f., thing, matter, matter of importance, fact; — de, about; desde habia — de, for a matter of; for about; gran —, much, a great deal; — hecha, settled, decided; — imposible, impossible; la — no era para menos, nothing less could be expected; publica, well-known, notorious; qué —, what; ser — de, to be sufficient cause to; to be enough to; no ser —: not to be small (or few in number), to be large (or numerous).
cosecha, f., production; de mi —, of my own invention.
coser, to sew, sew up.
cosquilla, f., ticklish point, weak point.
costa, f., cost, price; á —, at the cost.
costado, m., side.
costar, to cost.
costear, to skirt.
costumbre, f., custom, habit; de — , customary, usual(ly); tener de —, to be accustomed; to be one's custom.
cota, f., coat of mail.