a task that is taken on; an enterprise
a mammoth undertaking that involved digging into the side of a cliff face
the business of managing funerals
the action of catching up with and passing another vehicle while travelling on the inside
the Highway Code discourages undertaking on motorways
commit oneself to and begin (an enterprise or responsibility); take on
a firm of builders undertook the construction work
catch up with and pass (another vehicle) while travelling on the inside
he undertook me, at 70 mph, while on his mobile phone