Meaning of laboring oar | Babel Free

Definitions

1. An oar that is worked with great effort.
2. The part of a task that requires the greatest effort to achieve.
   US, broadly, figuratively

Examples

“And so too, when new issues demanding new policy calls come⟳ up within that scheme, Congress presumably wants the same agency, rather than any court, to take⟳ the laboring oar.”

CEFR level