Definition of rombowline in English:

rombowline

(also rumbowline)

noun

Nautical
  • Rope or canvas which has become rotten; weak rope made from this. Also in extended use: anything worthless or inferior; rubbish, trash (formerly occasionally specifically weak grog).

Origin

Mid 16th century. Origin unknown. Perhaps compare Middle Low German rumplinc kind of animal skins.

Pronunciation

rombowline

/rɒmˈbəʊlɪn/