кост

(n.) 1 reduction, diminution, decrease, abatement; 
2 negative profit, loss, damage; 
3 defect; 
stain; 
lack (of), shortage (of); 
deficiency (in); 
privation; 
deficit (of), shortcoming; 
каму ~ shortage, defect; 
stain; 
loss; 
бе каму ~ flawless, of high/good quality