Answer:

bungs

Answer	Crossword Clue
BUNGS	Cask stoppers.
BUNGS	Stoppers in casks.
BUNGS	Stoppers.

BUNGS	Corks.
BUNGS	Barrel holes
BUNGS	Stoppers

Crossword

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