峡部 is read as きょうぶ (kyoubu) and means isthmus.
きょうぶ
kyoubu
きょうこく
gorge
きょうかん
between the mountains
かんぶ
management
しっこうぶ
(the) executive
しれいぶ
headquarters
ぐんぶ
rural districts
きぶ
base
せいりぶ
copyreading department
だいにぶ
second division
たいさくほんぶ
countermeasures headquarters
とうしょういちぶ
First Section of the Tokyo Stock Exchange
とうしょうにぶ
Second Section of the Tokyo Stock Exchange