pen register

Fetched 2026-10-26 (cache).

Synonyms: enregister, pre register

Antonyms: enregister, pre register

Related words from Datamuse; suggestions, not definitions.

Noun

1. A [[device]] (originally fitted with a pen, but now purely [[electronic]]) that [[record]]s all [[number]]s [[call]]ed from a particular [[telephone line]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.