이웃을 사랑하고 자원봉사에 뜻이 있는 사람을 모집합니다. => We are seeking individuals loving their neighbors and interested in volunteer work. 뜻 has three related meanings according to the Naver dictionary. 1. an intention, interest, or ambition to do something. 뜻을 이루다. 사업이 네 뜻이라면 열심히 해 봐라. 2. meaning or intention behind a remark, writing, an action, etc. 이 문장의 뜻. 그 사람 말뜻을 모르겠다. 3. importance, meaning, or value of an action, event, policy, etc. 우리 삶의 뜻. 뜻깊은 일. So -에 뜻이 있다 means "to be interested in", "to want to do", or "to have one's eyes set on" something. Here it means people who want to do volunteer work.