蝦夷方言藻汐草

Ponco is directly documented for a baby; Chiri specifies a male infant in Samani, while the NINJAL edition gives the more general infant gloss. This supports its relation to 子供, without establishing a particular age or sex intended by this source. Chiri analyzes pon “small” with co “dog,” whereas the older commentary proposes a genital explanation. Those are distinct etymological proposals; the attested baby meaning supports the reading without settling its origin. The single corpus match is the NINJAL dictionary entry.