The term 'dime a dozen' is an idiom that means something is very common and of little value. It can be used to describe a situation where there are too many of something, or when something is not worth much. The crossword solutions for this term are 'RATE' (4 letters) and 'THIN' (4 letters). RATE is a noun that means the amount of money charged for something, or the speed at which something happens. THIN is an adjective that means having little thickness or density. Together, these two words can be used to describe something that is not worth much money and is not very dense.