"a wall," especially one around a town, is used (a) literally, Acts 9:25; 2 Corinthians 11:33; Hebrews 11:30; (b) figuratively, of the "wall" of the heavenly city, Revelation 21:12,14,15,17-19 .
"a wall," especially of a house, is used figuratively in Acts 23:3 , "(thou whited) wall."
"a partition wall" (mesos, "middle," and No. 2), occurs in Ephesians 2:14 , figuratively of the separation of Gentile from Jew in their unregenerate state, a partition demolished by the Cross for both on acceptance of the Gospel. Cp. PARTITION.