In the case of the Hansell House in Rosewell, Georgia, […] the mason, in endeavoring to indicate the hypotrachelium, or gorgerin, or whatever is the right name for the incised lines which in the Greek Doric play somewhat the part that the astragal plays in the Roman orders, made a very broad incision all around the shaft with the point of his trowel, but unfortunately held its blade the wrong way, so that the shadow effect is lost and no proper drip is formed.
Source: wiktionary