Answer:

root

Answer	Crossword Clue
ROOT	Plant part that most herbicides attack
ROOT	Original cause
ROOT	Weed killer's target

ROOT	Rummage (around)
ROOT	Plant part
ROOT	Rummage (through)
ROOT	... canal
ROOT	Cheer (for)
ROOT	Tree anchor
ROOT	Herbicide's target
ROOT	Potential drain obstruction

ROOT	Edible part of a carrot or radish
ROOT	Yam or turnip
ROOT	Most important part of a carrot or turnip plant
ROOT	What fans do
ROOT	A cube has one
ROOT	Fundamental part
ROOT	Plant holder?
ROOT	Part of a plant or tooth

ROOT	Rummage
ROOT	Underground part of a plant
ROOT	Carrot or beet
ROOT	Dig like a pig
ROOT	Source
ROOT	It may be square
ROOT	Tooth or plant part
ROOT	Etymologist's interest

ROOT	Carrot or radish
ROOT	Origin
ROOT	Underlying cause
ROOT	Lexicographic concern
ROOT	Etymological basis
ROOT	Etymologist's concern
ROOT	Canine part
ROOT	Poke (around)

ROOT	Etymology info
ROOT	Tooth part
ROOT	Tree's anchor
ROOT	Radish or carrot
ROOT	What many a word has