The term originated from the occasional black sheep which are born into a flock of white sheep due to a genetic process of recessive traits. Black wool was considered commercially undesirable because it could not be dyed. In 18th and 19th century England, the black color of the sheep was seen as the mark of the devil.
The transom is the flat back end of a boat. Some boats are pointed on both ends, so they have no transom. A traditional canoe, pointed on both ends has no transom. A modern square stern canoe (made to take an outboard motor) has a transom.
For example, here is how the woven label is made: The looms weave polyester yarns, recreating the logo submitted by the client in the form of artwork. The loom works with two threads, the warp and the weft. The threads are interlaced lengthwise (warp) and widthwise (weft). The modern computerised Jacquard loom provides a ribbon which is then cut by a hot knife to the desired dimensions. This cutting technique seals the label to prevent fraying.