pale persicaria
noun
A knotweed, Polygonum lapathifolia, which bears spikes of greenish flowers and hard flat achenes, and is widespread in north temperate regions especially as a weed of damp arable land.
Origin
Early 20th century; earliest use found in Science.
- flight envelope
- flight feather
- flightily
- flightiness
- flight jacket
- flightless
- flightlessness
- flight lieutenant
- flight line
- flight log
- flight number
- flight path
- flight plan
- flight recorder
- flight risk
- flightseeing
- flight sergeant
- flight simulator
- flight suit
- flight surgeon
- flight test
- flightworthy
- flighty
- flimflam
- flimflammer