swarf

Short definition from Wiktionary

Noun

1. 1
   The waste chips or shavings from an abrasive activity, such as metalworking, a saw cutting wood, or the use of a grindstone or whetstone.
2. 2
   A particular waste chip or shaving.
3. 3
   A faint or swoon.

Verb

1. 1
   To grind down.
2. 2
   To grow languid; to faint.