the GNU version of the Collaborative International Dictionary of English
n. The quality or state of being brackish, or somewhat salt.
The Century Dictionary and Cyclopedia
n. The quality of being brackish; saltness in a slight degree.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the quality of being salty, as the saltiness of water
Word Usage
"The brown water, grass-sheeted at the sides, conceals the bright yellow sand of the bed; when placed in a tumbler it looks clear and colourless, and the taste is perfectly sweet — brackishness does not extend far above Porto da Lenha."