follow through

Short definition from Wiktionary

Verb

1. 1
   To execute or complete a commitment.
2. 2
   To continue moving the arms (and any held implements, such as a bat or club) or legs after striking e.g. a ball.
3. 3
   To defecate unintentionally as a result of a cough or sneeze, etc.

Noun

1. 1
   The continuance or completion of a project.
2. 2
   The continued action of a stroke, or of the delivery of a ball, after it has been hit or released.