Plural of rectum . It means they always go in the same direction or direction. They move forward straight ahead and without straying. Don't twist them. No curves or twists. Correct, honest, fair, impartial, severe, firm, direct, flat, smooth. In Anatomy, it is the name of the final part of the large intestine, before the anus sphincter.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list