table mat

/T EY1 B AH0 L M AE1 T/
noun
  1. 1

    A cushion or stiff material placed on top of a table, underneath a tablecloth.

    โ€œAfter putting the leaves in the table and putting on the tablemat and tablecloth, they laid the placemats out.โ€

Source: https://en.wiktionary.org/wiki/table%20mat, https://en.wiktionary.org/wiki/tablemat