What is "banded architrave"

Band \Band\ (b[a^]nd), v. t. [imp. & p. p. Banded; p. pr. & vb. n. Banding.]

1. To bind or tie with a band.

2. To mark with a band.

3. To unite in a troop, company, or confederacy. ``Banded against his throne.''
   --Milton.

   Banded architrave, Banded pier, Banded shaft, etc. (Arch.), an architrave, pier, shaft, etc., of which the regular profile is interrupted by blocks or projections crossing it at right angles.