Bout

a contest or trial of strength, as of boxing.
period; session; spell:
a bout of illness.
a turn at work or any action.
a going and returning across a field, as in mowing or reaping.
Contemporary Examples

The War on Smoking Didn’t Save My Mother’s Life, but It Could Save Many More Joe Concha February 4, 2014
Brett O’Donnell: Obama Won on Points, But Romney’s Got the Edge Brett O’Donnell October 16, 2012
Cannes’ Eight Buzziest Films Anne Thompson May 18, 2009
Was I Born Anorexic? Rachel Shukert April 15, 2009
How Sneaker Culture Conquered the World William O’Connor March 15, 2014

Historical Examples

Slave Narratives: A Folk History of Slavery in the United States From Interviews with Former Slaves Work Projects Administration
The Bacillus of Beauty Harriet Stark
Roughing It Mark Twain (Samuel Clemens)
The Little Colonel Annie Fellows Johnston
Slave Narratives: A Folk History of Slavery in the United States Work Projects Administration

noun

a period of time spent doing something, such as drinking
a period of illness

a contest or fight, esp a boxing or wrestling match
n.