night-glass

night-glass

A sailor uses a night-glass to spot distant ships.

Definition
  1. Noun:
    • An optical instrument for night use: A "night-glass" is a type of binocular or telescope specifically designed to be used in low-light conditions, such as at sea during the night. It typically has large lenses to gather more light, enabling clearer vision in darkness.
Usage Examples
  • Noun:
    • The sailor relied on his night-glass to spot distant ships in the dark. (Using the optical device to see at night.)
    • A night-glass is essential equipment for maritime navigation after sunset. (A tool for night vision at sea.)
Advanced Usage

  • "to use a night-glass": to employ the device for observation in darkness.

    • The lookout used a night-glass to scan the horizon for hazards. (The person on watch used the instrument to check for dangers.)

  • "night-glass vs. binoculars": A night-glass often refers to a monocular or a specialized binocular with enhanced light-gathering capability, distinct from standard daytime binoculars.

    • Unlike ordinary binoculars, a night-glass has a larger objective lens to capture more ambient light. (Comparison highlighting the design difference.)
Variants and Related Words

  • Night-vision (adj): relating to technology that allows seeing in the dark.

    • Night-vision goggles are more advanced than a traditional night-glass. (A modern electronic alternative.)

  • Glass (n): a general term for a lens or optical instrument.

    • The captain cleaned his glass before using it. (Here, "glass" could refer to a telescope or binoculars.)
Synonyms

  • Night binoculars: binoculars designed for low-light conditions.

    • Night binoculars are another term for a night-glass. (Equivalent phrase.)

  • Night scope: a device for seeing in darkness, often used in hunting or military.

    • A night scope can be mounted on a rifle, whereas a night-glass is handheld. (Different application.)
Related Idioms
  • No idiom directly associated: "Night-glass" is a technical term and does not have common idiomatic usage. However, it may appear in nautical contexts as a specific tool.
Phrasal Verbs
  • None applicable: "Night-glass" is a noun and does not form phrasal verbs.