mortarless

/ˈmɔːrtərləs/
adjective
  1. Constructed or built without using mortar (a mixture of cement, sand, and water used to bond bricks or stones).
    • The garden wall was built using a mortarless system of interlocking concrete blocks.
    • Mortarless stone walls are popular in dry climates where traditional mortar can crack.
    • The new patio uses mortarless pavers that fit together like puzzle pieces.
What does "mortarless" mean? | whatsthatwordmean | whatsthatwordmean