la chatarra 

scrap, junk metal

waste: chatarra nuclear

small, loose change

morosidad, moroso 

slowness in paying debts; arrears

debtor in arrears, doubtful debtor 

pinchar

pincharse 

ni pincha ni corta 

puncture, to spear (recover)

inject, give a jab, needle, goad, wind up

to prick, puncture 

to have no say, no influence 

doesn't count for anything, has no clout 

a saber 

namely