A tentative procedure; an operation performed in order to ascertain or illustrate some truth; an experiment. Obsolete.

Any undertaking the outcome of which is uncertain; an experiment; a test of luck. Obsolete.

An experiment. Obsolete except as in 8b.

A tentative procedure; a method, system of things, or course of action, adopted in uncertainty whether it will answer the purpose.

A trial, testing, proof; experiment; = assay, n. 1 3 Obsolete.

A means of discovering or finding out; an experiment. Obsolete. rare.

Something done as an experiment or trial; an essay, an attempt; †a hostile attempt (obsolete).

An experiment, esp. one involving risk; a trial, a venture.

An attempt, trial, experiment.

A test or trial of the suitability or viability of something.

a selective trial; also, an experimental trial, a test of performance, a trial run or period, spec. of a play, etc., in a provincial theatre, etc…