The chemical reactions and pathways resulting in the breakdown of choline (2-hydroxyethyltrimethylammonium), an amino alcohol that occurs widely in living organisms as a constituent of certain types of phospholipids and in the neurotransmitter acetylcholine. [ GOC:jl https://www.worldcat.org/search?q=bn%3A0192801023 ]
Synonyms: choline catabolism choline degradation choline breakdown