A neuter noun denoting things associated with royalty, most commonly the royal dwelling or palace. The plural form 'royal palaces' appears frequently in classical texts. By extension, it can refer to the seat of empire—a capital city where royal power resides. Another sense identifies the royal treasury, where the king's wealth is stored. The word also takes on a concrete sense of royal regalia: the tiara or diadem worn as a symbol of kingship, appearing in Septuagint references as a 'diadem of beauty.' Botanical uses name certain plants, possibly for their regal appearance or associations.