「出る」 (deru) means "to exit," "to leave," or "to come out." It's an intransitive verb, describing something coming out or leaving a place by itself. For example, "家を出ます" (Ie o demasu) means "I leave the house." It describes movement from inside to outside.

「出(で)る」は、場所(ばしょ)から「外(そと)へ出(で)る」ことや「現(あらわ)れる」ことを意味(いみ)します。家(いえ)を出(で)ます。