Answer:

fours

Answer	Crossword Clue
FOURS	Plus ... (knickers)
FOURS	Polo teams
FOURS	Low pairs

FOURS	On all ...
FOURS	On all .. (crawling)
FOURS	Double-daters
FOURS	Low poker pair
FOURS	All ..
FOURS	Plus ....
FOURS	They beat full houses.
FOURS	Petits ..., frosted cupcakes.

FOURS	On all ....
FOURS	Plus ... (knickerbockers).
FOURS	Quartets.
FOURS	Petits ....
FOURS	Polo teams.
FOURS	Certain sizes.
FOURS	Bridge groups.
FOURS	Numbers

FOURS	Petits ...
FOURS	Small pair
FOURS	Quartets
FOURS	Bridge teams
FOURS	Polo teams, usually
FOURS	Frank
FOURS	Rare trick takers
FOURS	All ... (card game)

FOURS	On all ... (crawling, say)
FOURS	Trey beaters
FOURS	On all ..... (crawling)
FOURS	Crawling on all ...

Crossword

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