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.
Hardscrabble is the archetype of a strict and no-nonsense school headteacher, and not so easily pleased. She is not afraid to point out somebody's shortcomings and even lightly taunts students who do not impress her.