Denshi Jisho — Online Japanese dictionary

先生 せんせい 1: teacher; master; doctor;
2: (Suffix) with names of teachers, etc. as an honorific
Common word, Noun 
先生 せんせいがた doctors; teachers
Noun 
先生に就く せんせいにつく to study under (a teacher)
Expression, Godan verb with ku ending 
先生の述 せんせいのじゅつ teachers statement (expounding)
Noun 

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