collator

The English word “collator” has 4 meanings listed here.

noun

A person who collates.
A program or algorithm that collates.
A machine that selects, merges and matches decks of punch cards.
A police officer who maintains criminal records and analyzes them for intelligence.

From collate + -or.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.