Hitachi 

An abbreviation for the Hitachi Magic Wand, a personal massaging device infamous for being more commonly used as a sex toy.

A. "Those hitachis are good massagers"
B. *Looks at A suspiciously*
A. "What?"

Hitachi by chiffmonkey April 10, 2011

Hitachi 

A city in Japan, mostly though refered to as a vibrator / sex toy.

Hey the fuck you doin with that hitachi?!

Hitachi by toastys fatmas brother August 12, 2017

Hitachi train 

A non-air-conditioned tin can on wheels, also simply known as an 'old one', which runs around Melbourne's Metro train network on 35 degree (C) days. Surprisingly, this train is rarely late unlike the newer trains, although this may be the fact that no-one gets on it, hence no-one sprints through the station and forces or holds the doors open for their friends.

*sprints to the station while the boom gates are coming down, spots the Hitachi train approaching*
Crap, it's an old one, may as well wait for the next one, stuff roasting in there for half an hour!

Hitachi train by Waiting for the next train December 28, 2009

Mr. Hitachi 

Nickname used in polite conversation for the Hitachi Magic Wand, the world's most popular vibrator and a girl's best friend.

After watching Johnny Depp in The Tourist, I am in serious need of a visit with Mr. Hitachi!

Mr. Hitachi by JettaC September 24, 2011

The Hitachi Analysis 1920 

On May 12th 1920 Dimitri Hitachi, a great unrecognized scientist, artist and engineer, posted his analysis and research papers on how all matter is made energy, and all energy is made up of pure materials known as Adhitness. The density of Adhitness determines its Frequency, Speed etc. and is a core part in later research and theories developed by Sir Dimitri. With adhitness being great one can say that it will be matter and not energy anymore. Adhitivity also determines electronegativity of atoms as well as proves the main reason life exists.

1. Wow Quantum Theory is pretty easy compared to The Hitachi Analysis 1920
2. I agree it looks simple but there is much more to it but it also proves several research theories!

The Hitachi Analysis 1920 by Dimitri Hitachi January 29, 2022

Hiachi

Hiachi is another name used for "Hachi" from Hachishakusama which a bunch of people finds this name in a Roblox game called "The mimic"

Did you see her! Hiachi can be scary sometimes!

Hiachi by ValxnKameko June 23, 2021

Hikaru and Kaoru Hitachiin 

These two are the twins of Ouran High School Host Club. They tend to tease Tamaki Suoh and enjoy pulling pranks on other members or friends.

Generally their entire display is a forbidden love between two brothers, also known as twincest or Hitachiincest.

They were originally only prone to spending time with each other due to people never being able to tell them apart (and their parents were always too busy to pay attention to them). However, when Haruhi Fujioka came around they soon had another person to add into their little circle of trust.

They often play the "Which one is Hikaru?" game in order to stump their fellow students (the only way to tell them apart, so they think, is which way they part their hair which they change daily). However, in the anime an easier way to tell them apart is their voices.

Their trust issues originated from a maid who had worked for their parents who betrayed them. They had liked her because she would play with them, but upon stealing money from their family they caught her in the middle of the act in which she said, "No one will ever be able to tell you two apart!"

Hikaru Hitachiin is more notorious for causing trouble than his younger brother Kaoru. He also has been known to have a small crush on Haruhi Fujioka (though he does not know it, while Kaoru does).

Hikaru and Kaoru Hitachiin are known as "The Little Devil Type" according to Renge.

Hikaru and Kaoru Hitachiin by OuranFan December 31, 2009