go down

(UK also go down sth)
to move down to a lower level or place:
He went down on his knees and begged for forgiveness.
He first went down the mines when he was 17.
The plane went down (= fell to the ground because of an accident, bomb, etc.) ten minutes after take-off.
Everyone took to the lifeboats when the ship started to go down (= sink).
Could I have a glass of water to help these pills go down (= to help me swallow them)?
Would you go down to the basement and fetch me a book please?
The submarine went down all the way to the sea floor.
The elevator was going down when the fire alarm sounded.
It's quicker to go down using the escalator.
That joke went down like a lead balloon.

to reach or go as far as:
Its roots can go down three metres.
This path goes down to the river.
Go down to (= read as far as) the bottom of the page.

When the sun goes down, it moves down in the sky until it cannot be seen any more:
On summer evenings we would sit on the veranda and watch the sun go down.

to be reduced in price, value, amount, quality, level, or size:
The temperature went down to minus ten last night.
The company's shares went down 7p to 53p.
The swelling's gone down but there's still a lot of bruising.
He went down in my estimation when he started trying to be a singer as well as an actor.

to be remembered or recorded in a particular way:
Hurricane Katrina will go down in the record books as the costliest storm ever faced by insurers.

(US also go over)
to be received in a particular way:
The joke didn't go down very well.

to lose or be defeated:
England's unbeaten run of ten games ended last night when they went down 4–2 to France.
Dictators rarely go down without a fight.

UK
If a football team goes down, it drops to a lower division (= group of teams who play each other):
At the end of the season, the three teams at the bottom go down.

UK slang
to be put in prison:
She went down for three years for her part in the robbery.

If a computer system goes down, it stops working:
The battery should prevent the computer system from going down in the event of a power cut.

US slang
If an event such as a crime or a deal goes down, it happens:
I tried to tell Tyrell what was going down, but he wouldn't listen.

UK old-fashioned
If you go down from a college or university, especially Oxford University or Cambridge University, you leave either permanently or on holiday.
(Cambridge Advanced Learner's Dictionary & Thesaurus からの go down の定義 © Cambridge University Press)

ビジネス英語
to become less in amount, value, etc.:
go down (sth) to sth The company's shares went down 7p to 53p.

if a computer system goes down, it stops working:
The battery should prevent the computer system from going down in the event of a power cut.
(Cambridge ビジネス英語辞典 からの go down の定義 © Cambridge University Press)

- Cambridge Dictionary