A word appearing as G. rausta- the Gnomish Lexicon of the 1910s with the gloss “to hunt, chase, pursue (only in actual sense of following game)”, a verb form of G. raust “hunt, chase” (GL/65). Tolkien also had G. rautha- “hunt, chase, pursue” on the same page.
Neo-Sindarin: For purposes of Neo-Sindarin, I would adapt these verbs as ᴺS. ruida- “to pursue, chase” based on the later root ᴹ√ROY “chase” and cognate to ᴹQ. roita- of similar meaning, but removing the sense “hunt” and its connection to game animals to make it more distinct from [N.] fara- “to hunt”. I’ve seen this Sindarin neologism proposed in several places, but I’m not sure who first coined it.
The noun G. hunt “nostrils, nose, snout” appeared in the Gnomish Lexicon of the 1910s, where Tolkien said it was “properly [an] old dual” (GL/50). In The Gnomish Grammar Tolkien gave it the gloss “the nose (originally nostrils)”, and specified that it was based on an old dual suffix -nt. It may have been derived from some variant of the early root ᴱ√SUHYU “breath, exhale, puff”, and may be related to ᴱQ. súma “nostril” (QL/86).
Neo-Sindarin: For purposes of Neo-Sindarin, I would adapt this as ᴺS. sunt “(pair of) nostrils” from the later root √SŪ “blow” as a now-obscure fossilized dual of ✱sūm(ă) (?“blow-thing”) combined with the ancient dual suffix ✶-t, where sūm-t(ă) > sunt. A single nostril would be sunneg with the singular suffix -eg. Sindarin has a similar fossilized dual form: lhaw “(pair of) ears” vs. lheweg “ear”.