( informal ) to have received a letter, report, etc. from sb and then not replied or taken any action concerning it :
They have been sitting on my application for a month now.
( informal ) to have received a letter, report, etc. from sb and then not replied or taken any action concerning it :
They have been sitting on my application for a month now.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005