Denshi Jisho — Online Japanese dictionary

せき barrier; gate
Common word, Noun, Noun suffix 
ぜき honorific added to names of makuuchi and juryo division sumo wrestlers
Suffix, Honorific or respectful language, Abbreviation 
きかん 1: engine;
2: agency; organisation; organization; institution; organ; body;
3: system; facility; facilities
Common word, Noun 
おおぜき sumo wrestler of second highest rank
Common word, Noun 
げんかん entranceway; entry hall; vestibule; foyer; entryway; mud room
Common word, Noun, No-adjective 
ぜいかん customs house
Common word, Noun 
そうかん correlation; interrelation
Common word, Noun, Suru verb 
つうかん customs clearance
Common word, Noun, Suru verb 
なんかん barrier; obstacle; difficulty; hurdle; deadlock
Common word, Noun 
れんかん connection; relation; linkage
Common word, Noun, Suru verb 
かいかん maritime customs taxes
Noun 
からくり 1: (Usually written using kana alone) mechanism; machinery; contrivance; device;
2: (Usually written using kana alone) trick; dodge;
3: (Usually written using kana alone) (Abbreviation) mechanical doll; string puppet
Noun 
せっかん regents and advisers (advisors)
Noun 
差機 さきかん difference engine
Noun 
きょうかん one's hometown
Noun 
しょうかん short interval of leisure; short break or breather; lull
Noun 
熱機 ねつきかん heat engine; thermomotor
Noun 
下部機 かぶきかん subordinate offices or institutions
Noun 
ガス機 ガスきかん gas engine
Noun 
内玄 うちげんかん side entrance
Noun 
霞が かすみがせき 1: area in Tokyo;
2: Japanese government departments (euph)
Noun 
霞ケ かすみがせき 1: area in Tokyo;
2: Japanese government departments (euph)
Noun 
霞ヶ かすみがせき 1: area in Tokyo;
2: Japanese government departments (euph)
Noun 
新大 しんおおぜき sumo wrestler newly promoted to ozeki rank
Noun 
内玄 ないげんかん side entrance
Noun 
水機 みずからくり puppet powered by (falling) water; water-powered contrivance; show using such a device (in Edo-period Osaka)
Noun 
管理機 かんりきかん administrative authority
Noun, Computer terminology 

Found 108 words. Page one, two, three, four

You can also

Look up kanji details for *関.

Try a Yahoo Jisho search for *関 .
Try a Goo Jisho search for *関 .
Try a Google search for *関 .