fieldglass

noun
UK /ˈfiːldɡlɑːs/
US /ˈfiːldɡlæs/

A small tube you look through to see faraway things more clearly.

She raised the fieldglass to her eye and spotted a deer across the meadow.


OTHER MEANINGS

2. A single small telescope used by hunters or birdwatchers to watch distant animals.

The hunter carried a fieldglass in his pack for spotting game.

3. A pair of small binoculars designed to be carried outdoors.

He packed a fieldglass for the hike up the ridge.

4. Any portable optical instrument for viewing distant objects.

Sailors once used a fieldglass to watch for ships on the horizon.