[v] grow smaller; "Interest in the project waned"
[v] stop operating; "My computer crashed last night"; "The system goes down at least once a week"
[v] be defeated; "If America goes down, the free world will go down, too"
[v] be ingested; "This wine sure goes down well"; "The food wouldn't go down"
[v] disappear beyond the horizon; of celestial bodies such as the sun and the moon
[v] move downward and lower, but not necessarily all the way; "The temperature is going down"; "The barometer is falling"; "The curtain fell on the diva"; "Her hand went up and then fell again"
[v] go under, "The raft sank and its occupants drowned"
[v] be recorded or remembered; "She will go down as the first feminist"