'Tethered' meaning tied or to have a bond with.

Usually when there is a strong bond between two entities (can be two objects, two nations or two people) they are tethered and the strength of the bond can pull through anything. Even when the room seems dark, dusty, smelly and the situation looks downcast, the tethered bond can create a glimmer of hope and reverse the dark to light, the dusty to pristine, the smelly to aromatic and the situation from downcast to bright.
The tethered bond between two people is the most powerful bond that exists in the world therefore making the glimmer of hope even greater.
Mother: child, i wish not to discuss the matter any more. we are a little tired of listening to that song of yours

Child: but mother, please listen to the A chord i have been practicing so hard. And mum we shared a strong bond remember.

Mother: oh dear... of course my love, we are tethered. Please play your delightful instrument.

As can be observed the tethered bond between the mother and the child gave a glimmer of hope for the mother to allow her son to play his melodic instrument to her.

Similarly a tethered bond between to people can act as a strength for hope and resolve.
by Loopypops June 7, 2010
The sexual act of smacking a males testicles around the shaft after or during oral sex
Rob enjoyed being tethered by Nate after the big game.
by Bear Hunter 96 July 27, 2015
A term used by members of the American Negro ethnic group (refered to later in history as colored, African-American, Black, FBA/ADOS) to describe African and/or Caribbean immigrants who move to America for economic opportunity using the benefits of the American Negro Civil Rights struggle while simultaneously disparaging the history, legacy, and lineage of the Negro American movement.
I don't know why Kuku Kufi is on the news saying African-Americans don't need reperations, he/she is a whole tether. Why are they even in the conversation? Why do they keep saying WE? Yo, that's a whole first generation immigrant.
by Crispus Attucks Reloaded September 1, 2022
A black person who moved from Africa or the Caribbean to the United States and pretends to be a Black American native to the country. Often they take anti-Black, white supremacist view points despite being black.
Jafari comes from Ghana, he’s always talking bad about Black Americans, but he wants to appropriate their culture when it’s convenient for him. He’s a tether.
by Red Joker August 4, 2022
AS Defined by FBA's
Background Information: FBA(Foundational Black Americans) refers to the LINEAGE OF Black people who are the descendants of those blacks who were enslaved during the period of U.S chattel slavery. Those include:

-native born indigenous black Americans

- Black Freemen

- the 3% or so of Africans arriving during the American slave trade and mixed in with the natives.

Tether refers to a subset of black immigrants arriving mostly after changes to the 1965 Naturalization and Immigration Laws, whom appear to have an Anti-FBA, sociopolitical agenda to replace them and undermine their efforts to pursue protections legislation, long overdue reparations from the U.S Government, and other resources that were originally earmarked to benefit FBAs. FBA's interpret the actions of these "tethers" as traitorous and treasonous since they were primarily responsible for fighting to have the 1965 immigration laws changed and amended to allow black immigrants an unprecedented pathway to citizenship in the U.S. NOTE THE DISTINCTION being made: A "tether" does not refer to "ALL" black immigrants as suggested by the hyperbole of those black immigrants who would be considered "tethers" by FBA's. This only refers to those insurgent black immigrants who move to undermine the efforts of FBAs.
A black immigrant acting as a tether will frequently undermine the efforts of FBAs
by July 3, 2022
On house arrest, usually with a tracking device around one's ankle. Like a horse tethered to a post; you can't go anywhere.
Nah, man, you gotta come over to chill. You know they got me on the tether n' shit!
by The Infragable Krunk April 18, 2015
using your cellular phone as your computer modem.
"Did you know you can connect to the internet with your cell phone via tethering?"
by Keystr0ke September 5, 2006