Answer:

block

Answer	Crossword Clue
BLOCK	Impede
BLOCK	Plug
BLOCK	"Old" chip producer?

BLOCK	Word with chopping or stumbling
BLOCK	... party (neighborhood get-together)
BLOCK	Writer's problem
BLOCK	Building toy
BLOCK	Inhibit
BLOCK	Check
BLOCK	Tackle partner
BLOCK	Keep from happening

BLOCK	Child's building toy
BLOCK	City square
BLOCK	Noggin
BLOCK	Offensive action, in football.
BLOCK	One side of a city square.
BLOCK	City square.
BLOCK	Tackle's partner.
BLOCK	Urban area.

BLOCK	Do a football line job
BLOCK	Obstruct
BLOCK	Urban area
BLOCK	City division
BLOCK	Lego unit
BLOCK	Jam
BLOCK	Veto
BLOCK	Lego piece

BLOCK	Tackle's partner
BLOCK	City sector
BLOCK	Protect the quarterback
BLOCK	Urban land unit
BLOCK	One of a set for toddlers
BLOCK	Partner of tackle
BLOCK	Tetris piece