regrind1
/ˈriːˌɡrʌɪnd/Chiefly Manufacturing Technology
noun
An act of regrinding; the result of this.
Origin
Late 19th century; earliest use found in Items of Interest. From regrind.
regrind2
/ˌriːˈɡrʌɪnd/verb
[with object] To grind again.
Origin
Mid 17th century; earliest use found in John Evelyn (1620–1706), diarist and writer. From re- + grind.