birdweed
English
Etymology
From
bird
+
weed
.
Noun
birdweed
(
countable and uncountable
,
plural
birdweeds
)
Any of certain species of plants of the
genus
Polygonum
, especially
Polygonum aviculare
(
common knotgrass
)
References
Polygonum
on Wikipedia.
Wikipedia
“
birdweed
”, in
OneLook Dictionary Search
.