开间kāijiān 1.〈方dial.〉旧式房屋的宽度单位,相当于一根檩的长度(约一丈左右){bay; standard width of a room in an old-style house (about 10 chi or the length of a purlin)}: 单～{one-bay house; a house about 10 chi wide}|双～。{double-bay house; one-room house about 20 chi wide} 2.房间的宽度{width of a room}: 这间房子～很大。{The room is rather wide.}