noun which may take the genitive case particle 'no'
specially tailored; tailor-made; specially arranged
Used for clothing made to order, or for transportation (train, plane, etc.) arranged specifically for a group or purpose. Often appears as 別仕立ての before a noun.
He was wearing a tailor-made suit.
A specially arranged bus was prepared for the group trip.
Compound of 別 (separate, special) and 仕立て (tailoring, preparation). The exact historical derivation is uncertain, but the word has been used since at least the early modern period to refer to something made or arranged separately for a specific purpose.