Answer:

OOO

AnswerCrossword Clue
OOOTic-tac-toe row
OOOWinning tic-tac-toe row
OOOHugs, on greeting cards
OOOWinning game row
OOOTic-tac-toe win
OOOTic-tac-toe winner
OOO"Hollywood Squares" win
OOOTick-tack-toe win
OOONew pedometer reading
OOOGoose eggs
OOOScoreboard trio
OOONew odometer setting
OOOPedometer reading
OOOOdometer start
OOOThree hugs
OOOWinning tic-tac-toe sequence
OOO"Hollywood Squares" victory
OOOGame winner
OOOTic-tac-toe victory
OOOXer's downfall?
OOOKid's game winner
OOO"Hollywood Squares" line
OOOHugs, in a letter
OOOSymbols of affection
OOOGame-winning line
OOOPencil game winner
OOOQueenside castle, in chess notation
OOOWinning game line
OOOHugs, in letters
OOOHugs, on cards
OOOHugs, symbolically
OOOValentine symbols
OOOThree rings
OOOWinning tic-tac-toe line
OOOHugs in a love letter
OOOTrisha Yearwood's "XXX's and ...'s"
OOOWinning "Hollywood Squares" line, at times
OOOXXX counterpart
OOOValentine hugs, on paper
OOOXXX opposite