record high
noun[C]
ukusthehighestamountorlevelthat something haseverreached:
at a record high/at record highsThe Dow Jonesindexclosedat arecordhigh onMonday.
Bankruptcies are atrecordhighs.
record-high
adjective[before noun]
How can wesolvethe country's record-highunemploymentproblem?