What is a ream?
With reference to paper count 1 ream of paper contains 500 sheets.
There are two conflicting units at work here. One is the ream as mentioned in the question and one is the quire. "Short" paper measurements insist that there are 24 sheets in a quire and 20 quires in a ream, therefore, "short" paper measurements give 480 sheets to a ream. Writing paper measurements give 25 sheets to a quire and 20 quires, therefore, 500 sheets, to a ream.
a ream of cigarettes is usually defined by a total of 10 packs or packets, which usually contain 20 cigarettes each, making it 200 cigarettes per ream. however, with the existence of 10 cigarette packets, the no of cigarettes per ream has been in dispute. many hold that 200 cigarettes is still the standard for reams of tobacco
To ream someone out is to really let them have it verbally - to tell them all the bad things you're mad about. The word means a bundle, or a lot, like a ream of paper. Also, it means a tool to twist in an opening to make the opening larger. The tools is called a "reamer", and the verb "to ream" means to use the tool. This is the actual meaning of "He reamed…