Sentence:  But Miss Thorn relieved the situation by laughing aloud,.... We began to tell her about Mohair and the cotillon, and of our point of observation from the Florentine galleried <WSD>porch</WSD>, and she insisted she would join us there. 
Meaning of the word marked with <WSD> tags:  A covered and enclosed entrance to a building, whether taken from the interior, and forming a sort of vestibule within the main wall, or projecting without and with a separate roof.