"Surrender"
A Dictionary will give you the meaning of a word, its etymology and its roots, where a Thesaurus will give you words which have a similar (often the same) meaning and can be used in a similar context.
You don't. If you make a name up for your child - give it your own meaning. Or if its similar to another name or its a combination of two other names then give it the meaning of that name.
A thesaurus is not supposed to give definitions at all. It's only supposed to list words that have the same meaning, or a similar meaning - in other words, synonyms.
The upper, fortified part of an old city.
posterior is similar in meaning to what?
The word avoid means to keep away from something or someone. Similar words or meanings are evade, elude, and hide from.
Poly has a similar meaning with multi-.
similar meaning
A similar meaning to masticate is the word: chew.
similar in meaning to expedite.
Representative has a similar meaning to iconic.
prompt, fast, speedy