From Longman Business Dictionary
chairwomanchair·wom·an /ˈtʃeəˌwʊmənˈtʃer-/ noun (plural chairwomen /-ˌwɪmɪn/) [countableC] COMMERCEa woman who is in charge of a meeting or who directs the work of a committee or organizationSYN CHAIRthe acting chairwoman of the Broadcasting Standards Council