(Internet) Any snippet of irrelevant text or data which is pasted into an online conversation to disrupt it.

One who has an extremely high level of ability or knowledge within an area of achievement or expertise. / (Freemasonry) Someone who has previously been a master at a given lodge.

Alternative form of past master

Third-person singular simple present indicative form of talk past

To talk at cross purposes with; to speak in such a way that a listener fails to understand one's meaning.

simple past tense and past participle of talk past

present participle of talk past

Substance used to transfer heat evenly, such as is used in computers; thermal grease.

A caustic mixture of potash and quicklime.

(dated) peanut butter.