Stopping training, usually done gradually; when milk begins to flow from the mare.

move something or somebody to a lower position; "take down the vase from the shelf"

fail to meet the hopes or expectations of; "Her boyfriend let her down when he did not propose marriage"

The let down reflex is an involuntary reflex during breastfeeding which causes the milk to flow freely.

Lowering a unitized or partial load down to where it can be orderpicked.

"Let Down" is the first single from Superbeautifulmonster by Bif Naked. The song is about someone who has no job and lives with their family but will someday move out and become a rock star and the family sees them as a let down.