Wordnet 3.0
NOUN (2)
1.
a body of water that was created by a flood or tide or by being held or forced back by a dam;
- Example: "the bayous and backwaters are breeding grounds for mosquitos"2.
a place or condition in which no development or progress is occurring;
- Example: "the country is an economic backwater"
The Collaborative International Dictionary of English v.0.48:
Backwater \Back"wa`ter\, n. [Back, a. or adv. + -water. ]
1. Water turned back in its course by an obstruction, an
opposing current, or the flow of the tide, as in a sewer
or river channel, or across a river bar.
[1913 Webster]
2. An accumulation of water overflowing the low lands, caused
by an obstruction.
[1913 Webster]
3. Water thrown back by the turning of a waterwheel, or by
the paddle wheels of a steamer.
[1913 Webster]
WordNet (r) 3.0 (2006):
backwater
n 1: a body of water that was created by a flood or tide or by
being held or forced back by a dam; "the bayous and
backwaters are breeding grounds for mosquitos"
2: a place or condition in which no development or progress is
occurring; "the country is an economic backwater"