A prediction about the outcome of something, typically made without factual evidence or support.
to suppose (introducing a proposition of uncertain plausibility).
To solve by a correct conjecture; to conjecture rightly.
To reach a partly (or totally) unqualified conclusion.
To think, conclude, or decide (without a connotation of uncertainty). Usually in first person: "I guess".
A stone used to check the quality of gold alloys by rubbing them to leave a visible trace.
A standard of comparison or evaluation.