1
tearing up and discarding (e.g. documents);destruction
これらの書類に関しては破棄することが一番いいと思う。
With respect to these documents, I think the best thing is to destroy them.
2
annulment;cancellation;abrogation;voiding;breaking (e.g. a treaty)
彼らは婚約を破棄した。
They called off their engagement.
3
reversal (of an original ruling on appeal);quashing
Other forms
破毀 【はき】 (rarely used kanji form)