buttressed

adj

1. Having buttresses or supports.

   “Only the buttressed outer walls still stood.”

   “[…] St. Bede's at this period of its history was perhaps the poorest and most miserable parish in the East End of London. Close-packed, crushed by the buttressed height of the railway viaduct, rendered airless by huge walls of factories, it at once banished lively interest from a stranger's mind and left only a dull oppression of the spirit.”

verb

1. (form-of, participle, past)simple past and past participle of buttress