In Colombia, a "ñoco" is etiher a person who is lacking one or more fingers (or a whole hand), or the remaining flesh and bones of those fingers.
Synonyms of ñoco are mocho
Used in Colombia as well
"Ella tiene un ñoco en la mano derecha. -> Translation: She lacks a finger on her right hand. / Él estaba cortando yuca y quedó ñoco. -> Translation: He was chopping yuca and he cut his finger."