Bow is a term which can refer to:
1. The forward or front end of a boat , asused in boat sailing term
2. The variation from a straight line in the vertical plane of a roll formed piece. It can be eitherCross bow or longitudinal bow, as used in roll forming , corrugating, and metal fabricating processes
A Book-sewing machine operator is a person who sets up and operates machine to sew gathered and collated signatures (pages) into book form for binding; pulls thread through lubrication box, thread guides, and needle to thread machine, and soaks bobbins of thread in water to lubricate thread;
Bituminous coal is characterized as a dense coal, usually black, sometimes dark brown, often with well -defined bands of bright and dull material , used primarily as fuel in steam-electric power generation, with substantial quantities also used for heat and power applications in manufacturing and to make coke.