measure word · unit of area equal to 100 mu or 6.67 hectares

这一带的良田足有千顷。

measure word · around or approximately (used for dates)

该文物制作于顷公元前五世纪。

adverb · a little while ago; recently

顷接来信，深感欣慰。

a short period of time; a moment

有顷，他才慢慢抬起头来。