We found one dictionary that defines the word tear into pieces:

Phrases: tear into small pieces, more... ▸ Words similar to tear into pieces ▸ Usage examples for tear into pieces ▸ Idioms related to tear into pieces ▸ Wikipedia articles (New!) ▸ Words that often appear near tear into pieces ▸ Rhymes of tear into pieces ▸ Invented words related to tear into pieces