plañir

Etymology
From (compare 🇨🇬, 🇨🇬, 🇨🇬 and 🇨🇬).

Perhaps a semi-learned form; cf. also an old Spanish (having expected phonetic development) with attested forms  and     as well as, which was modified with a conjugation change into the current form.

Verb

 * 1)  to cry and groan