訓 せま(い),せば(める),せば(まる),さ ・ 音 キョウ,コウ
Sino-Vietnamese: hiệp
The dog radical 犭 beside 夹 (squeeze): being squeezed from both sides, hence narrow. Sino-Vietnamese hiệp, as in hiệp lượng (narrow-minded).
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
この部屋は狭い。 (このへやはせまい)
This room is cramped.