Crosswords Solver

Answer: fipple
Answer	Crossword Clue
fipple	a plug at the end of a whistle, flute etc
fipple	plug stopping the upper end of a pipe, as a recorder or a whistle, and having a narrow slit through which the player blows

Crossword

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

Answer: fipple