הילד עומד על רגל אחת.

A word-by-word breakdown is:

• הילד = the boy
• עומד = stands / is standing
• על = on
• רגל = leg / foot
• אחת = one (feminine)

So the sentence means that the boy is standing on one leg/foot.

Because in Hebrew, the present tense usually does not use a separate word for am / is / are.

So:

• הילד עומד literally looks like the boy standing
• but it naturally means the boy is standing

This is normal Hebrew grammar. The word עומד already carries the idea of a present-tense action or state.

The prefix ה־ is the Hebrew definite article, meaning the.

• ילד = boy
• הילד = the boy

So the sentence is talking about a specific boy, not just any boy.

Because הילד is masculine singular, and the present-tense verb form has to match it.

• עומד = masculine singular
• עומדת = feminine singular

So:

• הילד עומד = the boy is standing
• הילדה עומדת = the girl is standing

In Hebrew present tense, verbs agree with the subject in gender and number.

With the number one, Hebrew usually puts the number after the noun.

So Hebrew says:

• רגל אחת = literally leg one

This is normal. Compare:

• ילד אחד = one boy
• ילדה אחת = one girl

That word order is different from English, but very common in Hebrew.

Because רגל is a feminine noun, and the number one must agree with it.

• אחד = masculine one
• אחת = feminine one

So:

• כיסא אחד = one chair (masculine noun)
• רגל אחת = one leg (feminine noun)

Even though the subject הילד is masculine, אחת matches רגל, not הילד.

It can mean either, depending on context.

In everyday Hebrew, רגל often covers both leg and foot, especially in expressions like this. So this sentence may be translated naturally as:

• The boy is standing on one leg
• or The boy is standing on one foot

Both capture the idea well.

If someone wants to be more specifically anatomical, Hebrew can use כף רגל for foot.

Because רגל אחת means one leg, not the one leg.

So:

• הילד = definite = the boy
• רגל אחת = indefinite = one leg

Hebrew does not add ה־ unless the noun is definite. Here the sentence is just saying that he is standing on one leg, not referring to some previously known leg.

Yes. לעמוד על רגל אחת is a normal and natural way to say to stand on one leg.

So the sentence sounds completely ordinary to a native speaker.

It can be used literally, for example in a description of balance, exercise, or a game.

The verb would change to agree with the subject:

• הילדה עומדת על רגל אחת = The girl is standing on one leg
• הילדים עומדים על רגל אחת = The boys / the children are standing on one leg
• הילדות עומדות על רגל אחת = The girls are standing on one leg

This is a very important Hebrew pattern: present-tense verb forms agree with gender and number.

A common pronunciation is:

ha-yeled omed al regel achat

More roughly:

• הילד = ha-YE-led
• עומד = o-MED
• על = al
• רגל = RE-gel
• אחת = a-CHAT

The ch in achat is the throaty sound heard in words like Bach or Chanukah.