v., adj., & n.
v. 1 intr. a (often foll. by at) look with wide-open eyes. b (of the eyes) be rolled about; protrude. 2 tr. turn (the eyes) sideways or from side to side.
adj. (usu. attrib.) (of the eyes) protuberant or rolling.
n. 1 (in pl.) a spectacles for protecting the eyes from glare, dust, water, etc. b colloq. spectacles. 2 (in pl.) a sheep disease, the staggers. 3 a goggling expression. goggle-box Brit. colloq. a television set. goggle-dive an underwater dive in goggles. goggle-eyed having staring or protuberant eyes.
[ ME, prob. from a base gog (unrecorded) expressive of oscillating movement ]