As a Hindi name
डिण्डिर · ḍinḍir · s.m.
Cuttle-fish bone (considered to be congealed foam of the sea) — Platts (1884), digital edition courtesy DSAL, University of Chicago, p. 567
As a Sanskrit word
Meaning
Cuttle fish bone, considered to be the foam of the sea.
Verified derivationWhy this matches what you typed
The spelling you confirmed, डिण्डिर, is itself a dictionary headword — no grammatical transformation stands between what you typed and the meaning above.
Dictionary citations
ḍiṇḍira m. = hiṇḍ˚, os sepiae, L.
ḍiṇḍira m. (-raḥ) Cuttle fish bone, considered to be the foam of the sea.
Caveats
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