to be torn off; to come off (i.e., a part becomes detached).
強風で枝がちぎれて落ちた。
A branch was torn off and fell in the strong wind.
ボタンがちぎれてなくなった。
The button came off (was torn off) and is gone.
袋の持ち手がちぎれてしまった。
The bag's handle came off.
to be torn to pieces; to be shredded; to fall apart into fragments.
メモがちぎれて机の上に散らばっていた。
The memo had been torn to pieces and scattered on the desk.
古いパンフレットは長年でちぎれてしまった。
The old pamphlet had been torn to pieces over the years.