i-adjective
long and thin; elongated
Describes something that is noticeably longer than it is wide, such as a face, leaf, or room. Similar to 細長い, but 長細い may emphasize the length more strongly.
See also: 細長い
彼は長細い顔をしている。
He has a long, thin face.
この部屋は長
This room is long and narrow.