We don't have synonyms for torans yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are trans, orans and toran.
(n) :
(architecture) A gateway consisting of two upright pillars carrying one to three transverse lintels, often minutely carved with symbolic sculpture, and serving as a monumental approach to a Buddhist temple.
(n) :
(architecture) A gateway consisting of two upright pillars carrying one to three transverse lintels, often minutely carved with symbolic sculpture, and serving as a monumental approach to a Buddhist temple.