alimentary canal
Concise Oxford English Dictionary © 2008 Oxford University Press:
alimentary canal/alɪmentərikəˈnal/
▶noun the whole passage along which food passes through the body from mouth to anus during digestion.
'alimentary canal' also found in these Oxford entries:
anus
- epithelium
- flatulent
- intestine
- midgut
- oesophagus
- parenteral
- pharynx
- stomach
- windy

