le koko bí ojú ẹja verb /lē kō.kō bí ō.d͡ʒú ɛ̄.d͡ʒā/
Definitions
  1. to be as tough as a fish's eye
Source: Wiktionary, where this word is spelled “le koko bi oju ẹja”. Reference: en-le_koko_bi_oju_ẹja-yo-verb-IKdfUkQN