abọ́bakú noun /ā.bɔ́.bā.kú/
Definitions
  1. the chief, usually a general, that is required to commit ritual suicide to join the ọba (“monarch”) in death especially
Etymology
From a- (“agent prefix”) + bá (“to accompany”) + ọba (“monarch”) + kú (“to die”), literally “one who dies with the monarch”.
Component words
a-agent prefixto accompanyọbamonarchto die
Source: Wiktionary, where this word is spelled “abọbaku”. Reference: en-abọbaku-yo-noun-p7kxg4aW