広い (hiroi) means "wide" or "spacious." This い-adjective describes a large area or extent, implying there's a lot of space, like in a room or a park. For example, "この部屋はとても広いです。" (Kono heya wa totemo hiroi desu.) means "This room is very spacious."

「広(ひろ)い」は面(めん)積(せき)が大大(おお)きい時(とき)に使(つか)います。例(れい)：この部(へ)屋(や)は広(ひろ)いです。