What does this sentence mean in the classical Chinese "Reading by Drinking": I drank a mouthful of white, how to explain it?

White means wine glasses.

I. Definition of white

1, the color like frost or snow (as opposed to "black").

2. bright; Bright.

3. Clear; Understand; Find out the answer.

4. Nothing; Blank.

Second, etymological explanation.

It turned out to be the shape of a candle with a wick or wick in the middle. The original meaning is "Ming" and "Qing".

Third, word formation

White flour, innocence, termites, daytime, white rice, etc.

Four. Evolution of glyphs (as shown)

Extended data:

1. White flour?

Flour ground from wheat.

Second, innocence? [green and white]?

1, purity; There is no stain.

2. Clear; I see.

Third, termites [bái yǐ]?

Insects shaped like ants live in groups and eat wood. It is extremely destructive to forests, buildings, bridges and railways.

Fourth, God? [báI ri]?

1 refers to the sun.

2. During the day.

Verb (abbreviation for verb) white rice?

Polished rice (as distinguished from "brown rice") is sometimes called rice.