saucer, n. — Green’s Dictionary of Slang

saucer n.

[SE phr. eyes like/as big as saucers, coined 14C]

an eye.

1858		D. Jerrold in Atheneum 8 May 592/3: I always know when he has been in his cups by the state of his saucers.
1864		M. Lemon Jest Bk 185: [as 1858].
1919		H.C. Witwer Smile A Minute 23: ‘You would have me, Jeanne, shot?’ she says, her eyes openin’ till each one was the prettiest saucer I ever seen in my life.

off one’s saucer (adj.)

1. (Aus.) disinclined, dispirited, ‘out of sorts’ [the image is of a pet refusing its food].

1889–90

2. (Aus.) mad, eccentric [the image is of a spinning ‘flying saucer’].

1943