Dog-eat-dog

automatic emergency shut-down and slow-down circuit

COOL DOWN; COOLING DOWN

down sprue (down-gate)

down-comer (down take)

down-converter(down-convertor)

down-gate (down sprue)

down-supply and down-return

look-down shoot-down

printed down-proof cotton cloth duck down quilt

run down [= running down]

2-deoxy-D-glucose(2-DOG)

a dead dog

a dog in the manger

a dog’s age

a dog’s life

a guide-dog for the blind

a jolly dog

a sad dog