Definition of pitch into in English:
1 informal Vigorously tackle or begin to deal with.
- So I pitched into the morning house clean routine, left all neat, tidy and sparkling clean, and took myself and the little silver Ford off to Boston.
- In spite of all my resolutions not to do so I pitched into a final code fix for my new web pages today.
- He prepares to roll up his sleeves and pitch into the parochial difficulties that await him.