the GNU version of the Collaborative International Dictionary of English
n. One who, or that which, weakens.
The Century Dictionary and Cyclopedia
n. One who or that which weakens.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. that which weakens or causes a loss of strength
Word Usage
"If the dollar drops to below 83 yen from 85.42 currently, the Bank of Japan could inject more cash into the banking system, a yen weakener, Nomura's currency strategist Taisuke Tanaka notes."