a horizontal bar, located at the front of a loom, over which the woven material is passed on its way to the cloth roll.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use breast beam in a sentence
The breast beam is held in position by two pegs near the right one of which there is a curved article of indeterminate use.
The warp is attached to the warp beam C on top and the breast beam D at the bottom.
The threads of the warp and the finished piece of cloth at the breast beam end are clearly indicated.