Definition of reams:
(n) :
A bundle, package, or quantity of paper, nowadays usually containing 500 sheets.
(v) :
(transitive) To enlarge (a hole), especially using a reamer; to bore (a hole) wider.
(v) :
(transitive) To remove (material) by reaming.
(v) :
(transitive) To remove burrs and debris from inside (something, such as a freshly bored hole) using a tool.
(v) :
To shape or form, especially using a reamer.
(v) :
(slang, vulgar, by extension from sense of enlarging a hole) To sexually penetrate in a rough and painful way.