Answer:

STRAIGHT

AnswerCrossword Clue
STRAIGHTFive in a row, in Vegas
STRAIGHTCombination at poker.
STRAIGHTDirect.
STRAIGHTPoker hand.
STRAIGHTPoker holding
STRAIGHTGo ... (be law-abiding)
STRAIGHTA flush beats it
STRAIGHTThis loses to a flush
STRAIGHTPoker hand
STRAIGHTHAND
STRAIGHTEven
STRAIGHTUnembellished
STRAIGHTHonest
STRAIGHT... as an arrow
STRAIGHTPlain-spoken
STRAIGHTLead-in for face or flush
STRAIGHTFLAT
STRAIGHTFlat