n. A slightly elevated and inclined surface, designed so that wet objects can be placed on that surface, and water on those objects can drip or drain away.
the GNU version of the Collaborative International Dictionary of English
n. a board beside a kitchen sink having a surface inclined so as to drain into the sink.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a board beside a kitchen sink and inclined to drain into the sink
Word Usage
"Scrambled eggs and God bless the chives got its own portable radio mounted drainboard flush with an oldies station."