Wiktionary
tolling agreement
Etymology 1 n. (context business English) An agreement by a toller with an owner of raw materials to process the raw material for a specified fee ("toll") into a product with the raw material and the product remaining the property of the provider of the raw material. Etymology 2
n. (context legal English) An agreement that has the effect of tolling or suspending the course of a fixed period of time, as a statute of limitations.