1. the ultimate user for which something is intended;
The Collaborative International Dictionary of English v.0.48:
Consumer \Con*sum"er\ (k[o^]n*s[=u]m"[~e]r), n.
1. One who, or that which, consumes; as, the consumer of
2. (Econ.) the person or organization that uses some item of
commerce or service in its own acitities, as opposed to
reselling the item or including it as part of another item
for resale; -- called also the end user.
WordNet (r) 3.0 (2006):
n 1: the ultimate user for which something is intended