'slow down' definitions:

Definition of 'slow down'

From: WordNet
verb
Lose velocity; move more slowly; "The car decelerated" [syn: decelerate, slow, slow down, slow up, retard] [ant: accelerate, quicken, speed, speed up]
verb
Become slow or slower; "Production slowed" [syn: slow, slow down, slow up, slack, slacken]
verb
Cause to proceed more slowly; "The illness slowed him down" [syn: slow, slow down, slow up]
verb
Reduce the speed of; "He slowed down the car" [syn: decelerate, slow down] [ant: accelerate, speed, speed up]
verb
Become less tense, rest, or take one's ease; "He relaxed in the hot tub"; "Let's all relax after a hard day's work" [syn: relax, loosen up, unbend, unwind, decompress, slow down] [ant: tense, tense up]

Synonyms of 'slow down'

From: Moby Thesaurus