second brain

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{senseid|en|Q586582}} {{lb|en|anatomy|informal}} The [[enteric nervous system]].
2. {{senseid|en|lifehack}} {{lb|en|[[lifehacking]]|colloquial}} The practice of unloading information to [[digital storage]], such as [[notetaking]] applications, and using software to ease and enhance one's mind's own use of such information; the applications, the associated data, and the practical use of them, collectively.

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