स्यूमगृभ्syūmagṛbhmfn. (prob.) seizing the reins (with the teeth; said of a restive or runaway horse) ib.
masculine, feminine and neuter; or adjective (probably) seizing the reins (with the teeth; said of a restive or runaway horse) ibidem
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Every entry for a word in Apte, Monier-Williams, Macdonell and the Dhātupāṭha, with their abbreviations spelled out, and an analysis of its forms.