set-back

American  

[set-bak] / ˈsɛtˌbæk /

noun

1. Surveying. the interval by which a chain or tape exceeds the length being measured.

2. setback.

---

set back British  

verb

1. to hinder; impede

2. informal to cost (a person) a specified amount

---

noun

1. anything that serves to hinder or impede

2. a recession in the upper part of a high building, esp one that increases the daylight at lower levels

3. Also called: offset.   setoff.  a steplike shelf where a wall is reduced in thickness

set back Idioms  

1. Slow down the progress of, hinder, as in The project was set back by the frequent absences of staff members . [First half of 1500s]

2. Cost, as in That car set me back twenty thousand dollars . [ Colloquial ; c. 1900]

3. Change to a lower level or earlier time, as in We set back the thermostat whenever we go on vacation , or On October 10 we have to set back the clocks . [First half of 1600s] Set back the clock is also used figuratively to mean “return to an earlier era,” as in He wished he could set back the clock to those carefree high-school days . Also see set forward .

---

Etymology

Origin of set-back

Special use of setback