Artificial intelligent assistant

dead man's eyes

dead man's eye(s Naut. Obs.
  Also dead men's eye(s.
  = dead-eye.

1466 Mann. & Househ. Exp. 214 A bolt for the stemme, also the closynge of dedemen yen. 1598 Florio, Morto..a pullie in a ship called the dead man he. 1626 Capt. Smith Accid. Yng. Seamen 15 Pullies, blockes, shiuers and dead mens eyes. 1706 Phillips (ed. Kersey), Dead-mens Eyes (in a Ship), a kind of little Blocks, or Pulleys, having many Holes, but no Shivers; wherein run small Ropes.

Oxford English Dictionary

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