Possible Clues:

• Tool for making a sloping edge on a piece of wood
• Inclination to get book for pound, all else being equal
• Sloping edge, in carpentry say
• Cut obliquely
• Gem angle
• Miter-joint cut
• Two flat surfaces meeting at other than a right angle
• Architect's inclination
• Oblique cut, as on a mirror's edge
• Woodworking angle