Answer:

enteron

Answer	Crossword Clue
ENTERON	Begin to take action
ENTERON	Set about
ENTERON	Begin

ENTERON	Digestive tract.
ENTERON	Begin.
ENTERON	Start.
ENTERON	Undertake.
ENTERON	Undertake
ENTERON	Embryonic system
ENTERON	Alimentary canal
ENTERON	Begin as an adventure

ENTERON	Begin, as an enterprise
ENTERON	Start, as an adventure
ENTERON	Begin, as an adventure

Crossword

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