An adjectival form of trann “shire”, so meaning “[of the] shire”, appearing its soft-mutated form Drannail in the King’s Letter within the phrase genediad Drannail “Shire-reckoning” (SD/129).
Neo-Sindarin: If trann is generalized to include any county or local administrative region, then trannail might generalize to an adjective meaning “✱regional, local”, as suggested in Ambar Eldaron.
Sindarin name of the Shire attested only in its lenited form Drann (SD/129). David Salo suggested this may have been a general term for an administrative district (GS/289, 393).