setback

noun

1. 1

   An obstacle, delay, disadvantage, blow (an adverse event which retards or prevents progress towards a desired outcome)

   “After some initial setbacks, the expedition went safely on its way.”

2. 2

   The required distance between a structure and a road.

3. 3

   A step-like recession in a wall.

   “Setbacks were initially used for structural reasons, but now are often mandated by land use codes.”

4. 4

   An offset to the temperature setting of a thermostat to cover a period when more or less heating is required than usual.

5. 5

   (possibly obsolete) A backset; a countercurrent; an eddy.

6. 6

   A backset; a check; a repulse; a relapse.