(roofing) A cleat designed to accommodate thermal movement of metal roof panels.

To dismiss or minimize (a problem, etc.) by explanation.

plural of expansion pack

(computing) A module that adds new content to an existing piece of software. / (video games, by extension) An add-on for a video game that includes additional content and is typically sold separately.

(finance) Paid for by an individual or group. / (by extension, idiomatic) At one's responsibility. / (figuratively) In a way as to harm somebody or something; to the detriment of.

(idiomatic, law, informal, derogatory) A search for information, especially incriminating information, that is conducted without specific direction or goal, in the hope that something may turn up.

(psychology) A failed prophecy, leading to a form of cognitive dissonance in the believer.

Alternative spelling of nonexpert

(slang, informal) Someone who must drink a lot of alcohol in order to get intoxicated.

Indicates the speaker thinks that the price is too high.