Then, in darting at the monster, knife in hand, he had but given loose to a sudden, passionate, corporal animosity; and when he received the stroke that tore him, he probably but felt the agonizing bodily laceration, but nothing more.
There are no more uses of "laceration" in the book.
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To treat a minor laceration, clean the cut and close it.
If tetanus shots are not up-to-date, it might be wise to get one after any laceration.