(transitive, literally) To test an item of clothing by wearing it, to determine if it is the correct size. / (transitive, figuratively) To test anything for suitability.

present participle of try for size

(humorous) Said after making a joke.

(colloquial) To try something (especially a theatrical play) on a less important audience to gauge the likelihood of success before committing to general release or approval.

The right of terminally ill patients to access experimental therapies (drugs, biologics, devices) that have completed Phase I testing but have not been approved by the FDA.

(chiefly in the negative) Due to a failure to make a significant enough effort.

present participle of try titles

plural of try line

(idiomatic) To attempt a skill, craft, trade, or action, possibly for the first time.

(informal) A vigorous, committed attempt or effort, often in the context of a nearly hopeless situation where failure is expected.