A50 - Article 50
B Day - Brexit Day (currently 29th March 2019)
BINO / BRINO - 'Brexit in Name Only'
CU - Customs Union = tariff-free trade within the CU and agreed common tariffs on imports from outside
EU27 - the 27 members of the EU minus the UK
ERG - European Research Group = group of 60-80 Tory MPs who work together to force a hard Brexit
FTA - Free Trade Agreement
FUKD - the Formerly United Kingdom & its Dependencies
GFA - the Good Friday Agreement (AKA Belfast agreement) which ended 30 years of NI Civil War
HoC - House of Commons
HoL - House of Lords
IndyRef - Scottish Independence Referendum
Irexit - Ireland leaving the EU (NOT happening, a batshit Brexiter fantasy)
NDA - Non Disclosure Agreement = legal agreement to prevent individuals/companies from sharing / publicising shared information - wrt Brexit, imposed by the Uk government
NI - Northern Ireland
NTB - Non-tariff barrier e.g. checks by the importing country on food safety, electrical safety etc
PD - Political Declaration = the accompanying document to the WA, which outlines the possible future EU-UK relationship
PMK - place marking = plaice mat king / plaice cat king (don't ask)
PV - People's Vote
rEU - Rest of EU = EU except for a country / countries
RoI - Republic of Ireland / Ireland
RoW - Rest of the World
rUK - Rest of UK = UK after one or more nations have left e.g. NI, Scotland
SM - EU's Single Market, a prerequisite for frictionless trade
WA - Withdrawal Agreement (which is just the agreement to leave, NOT a future trade deal)
WTO - world trade organisation