Related Clues:

• Sounds as if the schoolmaster gets bored with it
• What keeps the bricks apart
• Pestle go-with
• Combine into one
• It may help in building up or knocking down a house
• Sit and canoodle, form bond together
• Combine into a connected whole
• Used in building a house - or to destroy one
• Artillery weapon — building mixture — vessel with a pestle
• Masonry bond
• Bond between bricks
• Partner of bricks?
• Weapon — bonding material
• What covers many blocks?
• Lime mixture; a cannon