ìjinlẹ̀ noun /ì.d͡ʒĩ̄.lɛ̀/
Definitions
  1. considerable depth (of a hole or burrow)
Etymology
From ì- (“nominalizing prefix”) + jinlẹ̀ (“to have considerable depth”), ultimately from jìn (“to be deep”) + ilẹ̀ (“ground, earth”).
Component words
Wiktionary records 2 different ways of breaking this word down. Each line is one of them, not a further part.
ì-nominalizing prefixjinlẹ̀to have considerable depth
Source: Wiktionary · etymology 1, where this word is spelled “ijinlẹ”. Reference: en-ijinlẹ-yo-noun-XyQGRnB1