Definition of nail-sick in US English:

nail-sick

adjective

  • Especially of a ship or a roof: held together with corroded nails or otherwise unsound fastenings, and hence leaky.

Origin

Mid 19th century; earliest use found in Henry Mayhew (1812–1887), author and social reformer. From nail + sick.

Pronunciation

nail-sick

/ˈneɪlsɪk/