jakīnte
This refers to the base or bottom or foundation of something.
Sentence #30:
tema jekīþa ien la þō jatarūn jawēha to ja ñi honnarien ankēji rājamē rūjēmma rā anlāīñi jakīnte tā;
He knew that this was a mirage from all the ways that the sky came into it and out of it and went under the base of the hills.