sit-up
A vigorous exercise in which the abdominal muscles are strengthened by locking one's feet in a fastening device and sitting up numerous times.
Do a few sit-ups if you want to reduce your waist.
sitting on high cotton
Feeling pleased and happy; feeling successful.
The girls were sitting on high cotton because their basketball team had won the trophy.
sitting pretty
To be in a lucky position.
The new library is sitting pretty because a wealthy woman gave it $10,000 worth of reference books.
Mr. Jones was sitting pretty until his $25,000-a-year job was dropped by the company.
visiting nurse
A nurse who goes from home to home taking care of sick people or giving help with other health problems.
After John returned home from the hospital, the visiting nurse came each day to change his bandages.