1sum·ma·ry 
/ˈsʌməri/ noun
plural sum·ma·ries /ˈsʌməri/ noun [count] : a brief statement that gives the most important information about something
▪ He concluded the report with a brief summary. ▪ a chapter/plot summary ▪ They gave a summary of their progress in building the bridge.
▪ He concluded the report with a brief summary. ▪ a chapter/plot summary ▪ They gave a summary of their progress in building the bridge.
in summary
: as a brief statement of the most important information in a piece of writing or speech
▪ In summary [=in conclusion, in sum], we need a better public health-care system.
▪ In summary [=in conclusion, in sum], we need a better public health-care system.
