I. transitive verb
1. : hinder , check , delay
the harvest was set back by bad weather
2. : to cause (a timepiece) to indicate an earlier time
forgot to set his watch back on his trip west
3. : to defeat (an opponent) with the effect that points are subtracted from the opposing score (as in a card game)
II. transitive verb
: cost
how much a diamond would set you back
III. noun
: an offensive back in football who usually lines up behind the quarterback