Answer:

roundelay

Answer	Crossword Clue
ROUNDELAY	Song with repeated strain.
ROUNDELAY	Song with repeated strains.
ROUNDELAY	Short, lively rural strain.

ROUNDELAY	"Row, row, row your boat," e.g.
ROUNDELAY	Song with a refrain

Crossword

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