What is the meaning of わ?

The hiragana syllable わ (wa). Its equivalent in katakana is ワ (wa). It is the forty-fourth syllable in the gojūon order; its position is わ行あ段 (wa-gyō a-dan, “row wa, section a”).

a particle used in the end of sentences to indicate admiration or emotion

a particle used in the end of sentences to indicate emphasis