Reach, or reaching is a synonym for come, coming, arrive, arriving, attend, attending etc.

It is often used in place of such phrases as: "Are you coming?", "Are you going\going to make it?", " Are you on your way?" in the interrogitive, and "Come over", "I'll be there", "I'm on the way" etc. in the exclamatory.
It often stands alone as the sole word in an (sms)text message.

Anecdotal evidence could lead one to believe that this unconventional, ambiguous usage of the word was introduced into the urban lexicon by homophobic, adolescent, or twenty-something wiggas, who possibly feared reprisal at the double entendre the words come and coming conjured in their cohorts, friends and\or homies.

Ultimately, and this is just a gut feeling, I believe the aforementioned (admittedly dubious) etymological origin story smacks of the clumsy and often extremely loose and liberal repurposing of words and phrases which have become commonplace in the post-www.\sms era of of the past few decades.

Said slanglish was probably first uttered by one young hip-hop sycophant to a friend, or acquaintance who probably had to ask for clarification as to its contextual meaning. Apparently, it was deemed either sufficiently cool and\or enough of a time\140 character saver when used as a single word in place of an entire sentence, that it managed to gain traction and be thusly co-opted and amalgamated into the lols and imhos of females aged 12-32...ensuring it's inclusion in the Urban Dictionary.
Yo, you reaching tonight?

Ya, imma reach.
by Automatonomous March 24, 2016
Get the REACH mug.
One who is over-hyped or does not live up to expectations that are often considered mediocre.
Bro, i'm telling you for the last time, Hardee is The Reach.
by bauss committee December 6, 2011
Get the The Reach mug.
Said when someone is going too far with their actions and/or their opinions
Person1: Dude, kiribakus made a petition directed to Horikoshi to make their ship canon
Person2: Those clowns sure are reaching
by Will-o'-the-wisp June 1, 2019
Get the Reaching mug.
When one reaches from around the front to pleasure the male or females anus with one or more fingers (sometimes the fist).
Can you give me a reach in later? My ass needs some love.
by Babyreachin August 13, 2020
Get the reach in mug.
The act of manually unclogging a toilet to avoid an imminent fecal catastrophe
Upon flushing, Dan found himself staring down a rapidly filling bowl. He pulled up his shirt sleeves, plunged his hand into the brown soup, and did The Reach.
by Handler69 November 11, 2012
Get the The Reach mug.
The act of doing absolutely nothing but playing Halo Reach. Usually one "Reaches" instead of doing more important things like schoolwork or important dates.
Burnie: "Hey Geoff, did you finish that render i asked you to do a few weeks ago?"

Geoff: "Sorry, but i've been reaching every night."

Burnie: "Amen to that. I missed my kid's fourth grade play because of my reaching."
by SecretJustin October 6, 2010
Get the Reaching mug.
A special kind of reach around lubricated with any bodily fluid (the solution) including, but not limited to, spit, snot, or fecal matter.
Jason: "Where is Matt?"
Ben: "I don't know, probably giving his buddy a solution reach."
by JoseValentino December 2, 2016
Get the solution reach mug.