Transitive verb and Ichidan verb
みせる
みせの人は、なんのえを女の人に見せましたか？
What picture did the shop worker show the woman?
今年のなつは、すはだをチラリと見せるトップスが人気のようです。
It seems tops that show a bit of skin are popular this summer.
もし俺がこのポーカーゲームでかったら、お前らに俺のリザードンのカードを見せてやるよ。
If I win this poker game, I’ll show you guys my Charizard card.
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. Also present is the せ which means you're causing someone to do something. You could say you're causing someone to see something, but that sounds weird. A better translation would be to call this word to show.
The reading for this word is the same as the one that you learned with the kanji, so you should be able to read it.