in or to or toward the rear; "he followed behind"; "seen from behind, the house is more imposing than it is from the front"; "the final runners were far behind"
remaining in a place or condition that has been left or departed from; "when he died he left much unfinished work behind"; "left a large family behind"; "the children left their books behind"; "he took off with a squeal of tires and left the other cars far behind"
in debt; "he fell behind with his mortgage payments"; "a month behind in the rent"; "a company that has been run behindhand for years"; "in arrears with their utility bills"
in or into an inferior position; "fell behind in his studies"; "their business was lagging behind in the competition for customers"
of timepieces; "the clock is almost an hour slow"; "my watch is running behind"
make a counterattack and return like for like, especially evil for evil; "The Empire strikes back"; "The Giants struck back and won the opener"; "The Israeli army retaliated for the Hamas bombing"
any backward region that is isolated from the world and resists progress
a body of water that was created by a flood or tide or by being held or forced back by a dam; "the bayous and backwaters are breeding grounds for mosquitos"