Meaning

2 senses
  1. (UK, historical, not comparable)Of a Royal Navy warship in the Napoleonic Era: having 20–28 guns on one gun deck, a complement of 140–200, and weighing 340–550 tons burthen.

  2. (idiomatic, not comparable, uncommon)Terrible, awful; less than fifth-rate.

sixth-rate — meaning, examples, forms, synonyms | Krumeto