noun
Rare legal term for the person to whom a document or notice is addressed, typically in the context of service of process or official correspondence.
裁判所は受送達者に書類を送付した。
The court sent the documents to the addressee.
Compound of 受 (receive), 送達 (service, delivery), and 者 (person). The exact historical derivation is uncertain; it appears to be a modern legal coinage.