field-glass

field-glass

A birdwatcher raises his field-glass to observe a distant eagle.

Definition
  1. Noun:
    • A type of binoculars: "field-glass" refers to a portable optical instrument consisting of two small telescopes joined together, used for viewing distant objects, especially in outdoor settings such as birdwatching, hunting, or military observation. It is essentially a pair of binoculars designed for field use.
Usage Examples
  • (He used the binoculars to see the mountain more clearly.)
  • (The soldier used the binoculars for surveillance.)
  • (She brought the binoculars to aid in observing birds.)
Advanced Usage

  • "to look through a field-glass": to use the device to examine something at a distance.

    • He looked through his field-glass at the approaching ship. (He examined the ship using binoculars.)

  • "to adjust the field-glass": to focus the binoculars for clearer vision.

    • She adjusted the field-glass until the image was sharp. (She fine-tuned the binoculars for optimal clarity.)
Variants and Related Words

  • Field-glasses (plural noun): the same instrument, often used interchangeably with "field-glass" to refer to a single unit or multiple units.

    • The hiker carried a pair of field-glasses in his backpack. (He carried binoculars for viewing.)

  • Binoculars (noun): a more common term for the same device; "field-glass" is a specific, somewhat dated synonym.

    • He preferred using binoculars over a field-glass for their lighter weight. (He compared the two similar instruments.)
Synonyms
  • Binoculars: a pair of small telescopes for both eyes.
  • Opera glasses: small binoculars used at theaters, similar but often less powerful.
  • Spyglass: a single small telescope, though not the same as a field-glass.
Related Idioms
  • "Keep an eye on": to watch closely, often using a field-glass for distance.
    • He kept an eye on the herd through his field-glass. (He monitored the animals with the binoculars.)
Notes
  • "Field-glass" is a compound word combining "field" (open countryside) and "glass" (a lens or optical device). It is less common in modern usage than "binoculars," but remains in technical or historical contexts.