Possible Clues:

• Bit of 22 down around the street with mortar
• Chef's crusher
• Soft steel being flexible, it needs mortar
• Small club, goes with mortar
• What a nuisance to start to beat the mortar
• Tool used in mortar
• Pain in the neck for the French employed in the crush in the ground?
• Word from the Latin for ''crush''
• Spice grinder
• Grinding implement