Pronunciation: - ˌ dau ̇ n
Function: adjective
Date: 1934
1 a of a collar : having the ends fastened to the garment with buttons b of a garment : having a button-down collar
2 or but · toned-down \ -t ə n- ˌ dau ̇ n \ : conservatively traditional or conventional especially : adhering to conventional norms in dress and behavior < button-down businessmen>