Denshi Jisho — Online Japanese dictionary

旦那 だんな 1: master (of a house, shop, etc.);
2: husband (informal);
3: word used to address a male patron, customer, or person of high status (sir, boss, master, governor);
4: patron of a mistress, geisha, bar or nightclub hostess; sugar daddy;
5: (Buddhist term) alms; almsgiving; almsgiver
Common word, Noun 
旦那芸 だんなげい dilettantism; amateurism
Noun 
旦那取り だんなどり 1: to become a mistress; to serve as a concubine;
2: to serve one's master
Suru verb 
旦那衆 だんなしゅう gents; gentlemen
Noun 

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