Morter and pestle.

mor‧tar

1 [uncountable] a mixture of cement or lime, and sand and water, used in building for holding bricks or stones together

2 [countable] a heavy gun that fires bombs or shells in a high curve:

A cameraman was killed when his vehicle came under mortar fire.

a mortar attack

3 [countable] a stone bowl in which substances are crushed with a pestle (=tool with a heavy round end):

You'll need a pestle and mortar to grind the spices.

➔ bricks and mortar

 at brick1 (2)

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.