The wavelike contractions of the smooth muscle in the  gastrointestinal system are called peristalsis. The purpose of  peristalsis is to push boluses of food along the gastr â¦ ointestinal  tract.
quibble (third-person singular simple present quibbles, present participle quibbling, simple past and past participle quibbled) (intransitive) To complain or argue in a trivial or petty manner. They are constantly quibbling over insignificant details.
1. countable noun. 1  A quill is a pen made from a bird's feather. 2  A bird's quills are large, stiff feathers on its wings and tail. 3  The quills of a porcupine are the long sharp points on its body. 4  any of the large stiff feathers of the wing or tail of a bird. 5  the long hollow central part of a bird's feather; calamus.