An event during the oxygenation event of Earth's past, where the level of free oxygen in the environment exceeds the toleration levels of most extant anerobic life, becoming toxic to existing life, which prior to the mass production of oxygen, was an anerobic reducing environment. This is sometimes considered a mass extinction event, or the first mass extinction event, but as all life was unicellular, there is no fossil boundary to mark the event for conventional paleontology to recognize it.

present participle of catch it

(colloquial) There is not the remotest possibility of me doing the thing suggested.

Alternative form of cowcatcher

A bird, the wallcreeper.

Alternative form of get it in the neck

A person whose job is to conduct public relations by shielding a more prominent person by intercepting and deflecting complaints and criticism.

Alternative form of flak catcher

Alternative form of flak catcher

Alternative form of flak catcher