In various spec. uses. intransitive. Of the eyes: to burst out, escape from or out of their sockets, or the head. In later use chiefly hyperbolic…

Of the eyes: To flash with anger or rage.

Of the eyes: to bulge or goggle, as if about to burst from their sockets. Cf. start, v. 4b(a).

In occasional physical uses. intransitive of the eyes: To become set. Obsolete.

intransitive. Of the eyes: to protrude; to bulge (or appear to bulge) out, esp. with surprise, excitement, etc.

intransitive. figurative. To burn passionately, esp. with desire, longing, etc.

intransitive. To grow large or larger.

intransitive. Of the eyes: to open wide or bulge outwards, esp. in astonishment or fear. Chiefly with out.