What is the meaning of Nag?

An old, useless horse.

To repeatedly remind or complain to (someone) in an annoying way, often about insignificant or unnecessary matters.

To bother with persistent thoughts or memories.

To bother or disturb persistently in any way.

Someone or something that nags.

A repeated complaint or reminder.

A persistent, bothersome thought or worry.

Misspelling of knack.

The period between sunset and sunrise, when the sky is dark; night.

short for nag hmo (“yesterday”)

used in nag kis (“the day after tomorrow”)

Source: wiktionary.org

See also