What is the meaning of Guess?

To reach a partly (or totally) unconfirmed conclusion; to engage in conjecture; to speculate.

To solve by a correct conjecture; to conjecture rightly.

to suppose, to imagine (introducing a proposition of uncertain plausibility).

To think, conclude, or decide (without a connotation of uncertainty). Usually in first person: "I guess".

To hit upon or reproduce by memory.

A prediction about the outcome of something, typically made without factual evidence or support.

Source: wiktionary.org