pákò noun /k͡pá.kò/
Definitions
  1. chewing stick; used for brushing one's teeth
  2. bitterleaf: a plant of species Vernonia amygdalina, of which its sticks are used to make the chewing stick. Along with other members of the genus Vernonia, it is known as ewúro, and its bitter leaves are used in many stews and soups. It is also used as a purgative.
Used in
pákò-ìjẹ̀bú
Source: Wiktionary · etymology 2, where this word is spelled “pako”. Reference: en-pako-yo-noun-th2fjP-9