Sykkellykten virker ikke.

Because Norwegian very often makes compound nouns by joining words together.

Here:

• sykkel = bike / bicycle
• lykt = lamp / light

So:

• sykkellykt = bike light

Then the definite ending is added to the whole compound:

• sykkellykten = the bike light

This is very normal in Norwegian. English often writes these as separate words, but Norwegian usually combines them.

The ending -en is the definite singular ending, meaning the.

So:

• sykkellykt = a bike light / bike light
• sykkellykten = the bike light

Unlike English, Norwegian usually puts the at the end of the noun instead of using a separate word.

A learner-friendly way to see it is:

• lykt → light
• lykten → the light

And the same pattern applies to the compound:

• sykkellykt → bike light
• sykkellykten → the bike light

Because in Norwegian, definiteness is usually shown by a suffix attached to the noun.

Compare:

• English: the bike light
• Norwegian: sykkellykten

This is one of the biggest structural differences from English. Instead of placing the before the noun, Norwegian often adds a definite ending:

• -en
• -et
• -a

Which ending you get depends on the noun.

Yes, lykt is traditionally feminine.

So you may also see:

• ei lykt = a light
• lykta = the light

However, in Bokmål, many feminine nouns can also be treated like masculine nouns:

• en lykt
• lykten

So both of these are possible in Bokmål:

• sykkellykta
• sykkellykten

They mean the same thing. Sykkellykten is perfectly acceptable Bokmål, even though sykkellykta is also common.

Here, virker means works, is functioning, or is working.

The verb is å virke, which can have a few different meanings depending on context. Two common ones are:

1. to work / function

   • Telefonen virker ikke.
   • The phone doesn’t work.

2. to seem / appear

   • Han virker trøtt.
   • He seems tired.

In Sykkellykten virker ikke, it clearly means doesn’t work.

Because Norwegian main clauses usually follow verb-second word order.

In a simple statement, the finite verb normally comes early in the sentence, and ikke usually comes after that verb.

So:

• Sykkellykten virker ikke.

Pattern:

• subject
  • verb
    • ikke

Compare:

• Jeg forstår ikke. = I do not understand.
• Bilen starter ikke. = The car won’t start.
• Sykkellykten virker ikke. = The bike light doesn’t work.

This is different from English, where not often comes with do/does/did:

• does not work

Norwegian does not need that extra do here.

Yes. That is very natural.

• virker ikke = doesn’t work
• fungerer ikke = doesn’t function

In many everyday situations, both are fine.

A slight difference is that:

• virker is extremely common in ordinary speech
• fungerer can sound a little more formal or technical, depending on context

So both are correct, but virker ikke is a very common everyday way to say it.

It could be, depending on what you mean.

• sykkellykt = bike lamp / bike light unit
• sykkellys = bike light / bicycle light, often focusing on the light as equipment or illumination

In real usage, both kinds of expressions can appear. Norwegian often has more than one natural way to refer to something like this.

For example, people might say:

• Sykkellykten virker ikke.
• Sykkellyset virker ikke.
• Lyset på sykkelen virker ikke.

These are all understandable, though the exact nuance may differ slightly.

The key dictionary forms are:

• sykkel = bicycle / bike
• lykt = lamp / light
• sykkellykt = bike light
• å virke = to work / function; to seem
• ikke = not

So if you were looking things up, you would usually search for:

• sykkellykt
• virke

not the fully inflected forms sykkellykten and virker.

You would use the indefinite form:

• En sykkellykt virker ikke.

or, if using feminine gender:

• Ei sykkellykt virker ikke.

That means a bike light doesn’t work.

Compare:

• sykkellykt = a bike light
• sykkellykten / sykkellykta = the bike light

So the sentence changes only in the noun form:

• En sykkellykt virker ikke. = A bike light doesn’t work.
• Sykkellykten virker ikke. = The bike light doesn’t work.

A rough learner-friendly guide is:

• sykkel ≈ SIK-kel
• lykten ≈ LYK-ten

So the whole word is approximately:

• SIK-kel-LYK-ten

A few useful points:

• The y sound in Norwegian is not like English y in yes. It is a vowel sound made with rounded lips.
• The kk shows that the preceding vowel is short.
• The stress is usually on the first part: SYKkellykt...

Exact pronunciation varies a bit by dialect, but that rough pattern will help.

Not much in normal context. It is a straightforward sentence.

The only thing to remember is that å virke can also mean to seem, but here that meaning does not fit naturally. A bike light does not usually seem in this structure; the normal interpretation is clearly:

• is not functioning
• doesn’t work

So in ordinary usage, this sentence is understood very directly.