threads is a form of:

Sawhorse



noun
1.
(A frame with legs, used to support pieces of wood being sawed) បង្គង (សម្រាប់ដាក់ឈើអារ)
ENGLISH MEANING
noun
1.
A kind of rack, shaped like a double St. Andrew's cross, on which sticks of wood are laid for sawing by hand; -- called also buck, and sawbuck.