It means it always goes in the same direction or direction. Moving straight and not deviating. Don't let it happen. No curves or twists. Correct, complete, fair, impartial, severe, firm, direct, flat, smooth. In Anatomy, it is the name of the final part of the large intestine, before the sphincter of the anus.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list
