地鉄 is read as じてつ (jitetsu) and means ferrite.
じてつ
jitetsu
ちかてつ
subway
ちかてつどう
ちかてつさりんじけん
sarin gas attack on the Tokyo subway (March 20, 1995)
しえいちかてつ
municipal subway
えいだんちかてつ
Teito Rapid Transit Authority subway
とえいちかてつ
Toei Subway
せんだいしちかてつ
Sendai Subway
とやまちほうてつどうたてやません
Toyama Chihō Railway Tateyama Line
てつむじ
slate gray unpatterned cloth
ない
earthquake
ちいき
area
ちたい
zone