araiba de karada wo arau.

It is read:

あらいば で からだ を あらう

Breakdown:

• 洗い場 = あらいば
• 体 = からだ
• 洗う = あらう

Also, the particle を is written を but pronounced お in modern Japanese.

You are right: normal Japanese writing usually does not use spaces like this.

So this sentence would normally be written as:

洗い場で体を洗う。

The spaces are just a learning aid to make the parts easier to see:

• 洗い場
• で
• 体
• を
• 洗う

洗い場 means a washing area.

It often refers to:

• the place where you wash yourself before getting into a bath
• the washing area in a Japanese bathroom, bathhouse, or hot spring

So it is more specific than just bathroom. It suggests the place where washing happens, not necessarily the whole room.

で marks the place where an action happens.

In this sentence, the action is 洗う (to wash), and that action happens in the washing area, so で is the correct particle.

• 洗い場で = at/in the washing area

A common comparison:

• で = where an action takes place
• に = destination, existence, or a point in time

Since washing is an action done in that place, で is natural here.

を marks the direct object of the verb.

The verb is 洗う (to wash), and the thing being washed is 体 (the body), so:

• 体を洗う = wash the body

This is one of the most basic Japanese patterns:

noun + を + verb

For example:

• 顔を洗う = wash one’s face
• 手を洗う = wash one’s hands
• 体を洗う = wash one’s body

Because Japanese normally puts the main verb at the end.

A very common Japanese sentence order is:

[place] + [object] + [verb]

So here:

• 洗い場で = in the washing area
• 体を = the body
• 洗う = wash

This is different from English, but it is a very standard Japanese pattern.

洗う is the dictionary form (also called the plain form).

In this sentence, it is the non-past plain form, which can mean things like:

• wash
• will wash
• to wash in a simple label or description
• a habitual/general action, depending on context

So this form is often used in:

• dictionary entries
• simple explanations
• captions
• informal speech
• instructions written in a plain style

A more polite version would be:

洗い場で体を洗います。

The subject is not stated, and that is very normal in Japanese.

Japanese often leaves out information that is obvious from context. So depending on the situation, this could mean:

• I wash my body in the washing area
• You wash your body in the washing area
• One washes one’s body in the washing area

The listener or reader usually understands the subject from context.

Because Japanese often does not repeat possession when it is obvious.

If you say:

体を洗う

it is naturally understood as wash one’s body or wash your body, depending on context.

Adding 私の or 自分の is only needed when you want to:

• emphasize whose body it is
• make a contrast
• avoid confusion

So 体を洗う is the most natural everyday wording here.

洗い場 is a compound noun made from:

• 洗い = the stem of 洗う
• 場 = place

So literally, it is something like:

• washing place
• place for washing

This is a common pattern in Japanese: a verb stem + 場 can make a noun meaning a place for that activity.

So 洗い場 is not a full verb phrase; it is already a noun.

Yes, but it sounds a bit like a simple description, instruction, or caption rather than a full conversational sentence.

For example, it fits well in:

• a textbook example
• a guide to bath etiquette
• a label or explanation
• a list of actions

In casual conversation, people might say something more specific, such as:

• 洗い場で体を洗います。
• 先に洗い場で体を洗う。
• 洗い場で体を洗ってから入る。

So the sentence is natural, but its exact feel depends on context.

Yes, but the nuance is different.

• 洗い場で体を洗う = wash your body in the washing area
• お風呂で体を洗う = wash your body in the bath / bathroom, which is less specific

In Japanese bathing culture, 洗い場 is especially useful because it clearly refers to the place where you wash yourself before getting into the tub.

So if you want to emphasize the correct washing area, 洗い場 is the better word.