Answer:

teamsters

Answer	Crossword Clue
TEAMSTERS	Some truckers
TEAMSTERS	Truck drivers
TEAMSTERS	Drivers' union

TEAMSTERS	Truck drivers.
TEAMSTERS	Oregon Trail breakers.
TEAMSTERS	Dan Tobin's men.
TEAMSTERS	Certain workmen.
TEAMSTERS	Large labor union.
TEAMSTERS	Union men.
TEAMSTERS	Powerful union.
TEAMSTERS	Big U. S. union.

TEAMSTERS	Hoffa et al.
TEAMSTERS	Fitzsimmons's men
TEAMSTERS	Driving force?
TEAMSTERS	Semi professionals?
TEAMSTERS	Truckers
TEAMSTERS	Jimmy Hoffa's constituents
TEAMSTERS	Drivers in cabs

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.