What is the meaning of Hist?

An utterance used to discreetly attract someone's attention.

An injunction to be silent and/or to pay attention to what is being said or can be heard.

An instance of an exclamation attracting attention or injunction to be silent.

Abbreviation of history.

Pronunciation spelling of hoist.

there, thither (often far away)

fist

Source: wiktionary.org