I don"t quite understand what "subject" means in this sentence. Can anybody explain it for me? "Don't subject yourself to ridicule."
in your sentence, "subject" has the meaning
Don't subject yourself to ridicule.
Don't bring ridicule upon yourself
subjected to something
is to be brought under the influence of, effects of, or object of an action.
For your usage, it is often pronounced "sub-JECT" with the accent on the second syllable, not to be confused with "SUB-ject" which is the beginning of a sentence.