Crossword Clue:

the top layer of a wall

AnswerCrossword Clue
COPINGTop layer of a masonry wall.
CRENELEDHaving gaps in the top, as a castle wall
COATLayer on the wall
CREMAThin layer of foam at the top of an espresso
BARBEDWIREMaterial that reinforced the top of the Berlin Wall: 2 wds.
COATLayer on a wall
RECOATAdd another layer to, as a wall