My guess would be it comes from a navy saying "all hands on deck"
The term is etymology.
The etymology of a word is it's history, development and derivation.
Etymology is the study of words and their origins.
The term for a word's origin is etymology. It refers to the study of the history and development of words, including their origins, changes in form and meaning over time, and the influences of different languages and cultures.
Deck. "Hit the deck" = "Get on the floor" etc.
The etymology is derived from the noun "show" and the word "boat". It was first introduced in the 1800's as a term to describe artistic performances on a boat.
There is no real-world etymology for the word. All that is explained in the Star Wars canon is it's a term for a warlord who joined the fledgling republic peacefully.
The etymology dictionary term for academia is relating to academy. The meaning is theoretical, not practical, not leading to decision such as university debates or classroom legal exercises.
In ship architecture, the term 'Poop deck' refers to the deck area at the stern (rear, aft) part of the ship which is directly above a stern cabin. This deck is essentially the roof of the cabin in that location. The term derives from the French word for stern (la poupe).
Etymology is the study of a word and its developed meaning.
Best I can determine, the term "In the hole", referred to the batter following the batter on deck. Looking at old baseball movies, some of the footage actually showed a second circle painted on the field between the on deck circle and the dugout. At one time, both the on deck batter and the in the hole batter both knelt in their circles awaiting their turns. Somehow the in the hole circle has no longer been painted on the latter day fields, probably for safety reasons, but the batter following the on deck batter is still considered to be in the hole.
KAYO (meaning Knockout) Explanation: To "deck" is slang for hitting, therefore to"deck in the ring" is the term for a "KAYO" knockout in the boxing ring. "Deck" in this can have a double meaning as a verb refering to the action of hitting, and as a noun refering to the floor in the nautical term "deck" where the resulting knockout would send the person.