1.  chickweed(n = noun.plant) - any of various plants of the genus Stellaria;
is a kind of herb, herbaceous plant
is a member of genus stellaria, stellaria
has particulars: common chickweed, stellaria media, greater stitchwort, starwort, stellaria holostea, stitchwort

2.  chickweed(n = noun.plant) clammy chickweed, mouse ear, mouse eared chickweed, mouse-ear chickweed - any of various plants related to the common chickweed;
is a kind of herb, herbaceous plant
is a member of cerastium, genus cerastium
has particulars: cerastium arvense, field chickweed, field mouse-ear, cerastium tomentosum, love-in-a-mist, snow-in-summer, alpine mouse-ear, arctic mouse-ear, cerastium alpinum

   The name of several caryophyllaceous weeds, especially Stellaria media, the seeds and flower buds of which are a favorite food of small birds. [1913 Webster]

chickweed, n. any of numerous small plants, esp. Stellaria media, a garden weed with slender stems and tiny white flowers.

blinking chickweed, chickweed phlox, clammy chickweed, common chickweed, field chickweed, indian chickweed, mouse eared chickweed, mouse-ear chickweed, sea chickweed, water chickweed