The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of various submerged aquatic algae of the genus Chara that are frequently encrusted with calcium carbonate deposits and have nodes with whorled, filamentlike branches.
n. Any of various complex algae of the family Characeae, known for being branched and having enclosed egg cells.
the GNU version of the Collaborative International Dictionary of English
n. Any plant of the genus Chara; -- so called because they are often incrusted with carbonate of lime. See chara.
The Century Dictionary and Cyclopedia
n. A plant of the genus Chara: so called from the calcareous deposits which frequently occur on the stems.
n. Sometimes, the stone-parsley, Sison Amomum.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any of various submerged aquatic algae of the genus Chara having nodes with whorled filamentlike branches; usually encrusted with calcium carbonate deposits
Word Usage
"With regard to suitable plants for comparatively deep water in ponds or lakes, lakewort and stonewort grow on the bottom, and do not, as a rule, attain any considerable height."