Jhx 13; Then I must disagree with you and Wikipedia/Wiktionary. A pilot it also considered the 1st show of a series to be aired. Some even consider the Happy Days segment on Love American Style or The Simpsons from The Tracey Ulman Show, pilots. Of sorts.

It was a pilot in the traditional sense of the term. It was the 1st aired episode of a t.v. series.
Your definition is incorrect. Pilots were used to convince a network to order episodes of a regular series. Once a series is green-lit, early regular episodes may be used to introduce the audience to the series, but these are not in any sense of the term Pilots.
As Wikipedia describes it:
"A television pilot (also known as a pilot or a pilot episode and sometimes marketed as a Tele-movie) is a standalone episode of a television series that is
used to sell the show to a television network
."
"If a series eventuates, pilots are usually but not always broadcast as the introductory episode of the series."
Star Trek is very unusual in that it has two pilots, "The Cage" and "Where No Man Has Gone Before." Once NBC bought the series, "The Corbomite Maneuver" was written to help introduce audiences to the characters and milieu, but neither "Corbomite" nor "Man Trap" should ever be considered a Pilot.

It was a pilot in the traditional sense of the term. It was the 1st aired episode of a t.v. series. Not even like Happy Days or Andy Griffith, Mamma's Family, That Girl, The Simpsons, etc. That all premiered as part of an anthology or either on another show.

"The Man Trap" was not a pilot. Though the first episode broadcast, it was not the first regular series episode filmed.

You learn something new everyday!

Exactly. It was actually written to introduce us the Enterprise and the characters and the relationships between them. Like Kirk and McCoy, Kirk and Rand
"A voice from behind me reminds me. Spread out your wings you are an angel."

It was the first episode filmed for season 1 and it may well have launched the series if it were not held up in post production work (special effects) after other such episodes such as "The Man Trap" were ready to be aired.

I've never heard of the Corbonite maneuver being 1 of the pilots.

Ha Ha!

You forgot Sulu. He was a pilot too.

4 pilots
The Man Trap
Where No Man Has Gone Before
The Cage
The Corbomite Maneuver
"A voice from behind me reminds me. Spread out your wings you are an angel."