What is the meaning of Liang?

Synonym of tael, a former Chinese unit of weight (about 40 g) and a related unit of silver currency.

small hole.

A Chinese ounce or tael, reckoned as one-third heavier than the ounce avoirdupois. Short for 臺兩/台两 (“Taiwanese tael, equal to 1/16 of a catty or 37.5 grams”).

cave

Nonstandard spelling of liáng.

Nonstandard spelling of liǎng.

Nonstandard spelling of liàng.

tooth

small hole (e.g. nose, stab mark)

Source: wiktionary.org