1385, from O.Fr.
endenter "to notch or dent, give a serrated edge to," from L.L.
indentare "to crunch," from L.
in- "in" +
dens (gen.
dentis) "tooth" (see
tooth). The printing sense is first attested 1676. The noun is first recorded 1596 from the verb. Extended form
indentation first recorded 1728.
Indenture "contract for services" first recorded 1304, from Anglo-Fr.
endenture, from O.Fr.
endenteure "indentation," from
endenter. Such contracts (especially between master craftsmen and apprentices) were written in full identical versions on a sheet of parchment, which was then cut apart in a zigzag, or "notched" line. Each party took one, and the genuineness of a document of indenture could be proved by juxtaposition with its counterpart.