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

tooth

teeth

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

Source: Wiktionary