Noun
The name of several caryophyllaceous weeds, especially Stellaria media, the seeds and flower buds of which are a favorite food of small birds.
Source: Webster's dictionaryThe Democrats are the party of government activism, the party that says government can make you richer, smarter, taller, and get the chickweed out of your lawn. Republicans are the party that says government doesn't work, and then get elected and prove it. P. J. O'Rourke
Beginning in January 2014, the comic 9 Chickweed Lane tied a story arc to It Happened One Night when one of the characters, Lt. William O'Malley, is injured during World War II and believes himself to be Peter Warne. Source: Internet