IPA: /ˈɛr.ə.kəˌliːn/
KK: /ˈɛrɪkoʊlaɪn/
A harmful chemical compound found in betel nuts that affects the nervous system and is used in veterinary medicine to treat parasites.
Arecoline is often used in veterinary medicine to help eliminate worms in animals.
Arecoline is derived from 'areca' (from the Malay word 'areca', referring to the areca nut palm) and '-ine' (a suffix used in chemistry to denote substances). The word refers to a specific alkaloid found in the areca nut.
Think of the 'areca' nut, which is where arecoline comes from, and remember that it is a substance related to that nut.