spyglass

Definitions of spyglass
1

n a small refracting telescope

Synonyms:
field glass, glass
Type of:
refracting telescope
optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.