He angrily grabbed the other person by the collar.
I was grabbed by the collar and had trouble breathing.
Most common spelling; the second part is usually written in kana.
Ateji spelling using 倉; less common.
Ateji spelling using 座; less common.
Compound of 胸 (muna, 'chest') and ぐら (gura), possibly from 座 (kura, 'seat' or 'place'), referring to the area around the chest. The exact derivation of ぐら is uncertain.