Since the player who created this is no longer active, I took the liberty to add a few terms. Thanks for your suggestions guys!

HEE - Horse Eden Eventing

SD - Single Discipline

AD - All Disciplines

WB - Warmblood (Sometimes called Wubs)

TB - Thoroughbred (Sometimes called Tubs)

KNN - Knabstrupper

ISH - Irish Sport Horse

SH - Sport Horse

AA - Anglo Arabian

RID - Registered Irish Draft

X - Appendix Quarter Horse

PON - Sport Pony

RF - Random Factor

LB - Leaderboard

ABLB - All Breed Leaderboard

DLB - Dressage Leaderboard

CCLB (XCLB) - Cross Country Leaderboard

JLB - Jumping Leaderboard

CS - Cycle Suppressant

FR('d) - Free Range(d)

BA('d) - Breed Approval(ed)

SM - Schoolmaster

SM'd in J/XC/D/E - Has hit level 10 in that discipline.

Feds - Federations

Freshie - 3 y.o. Stallion

Maiden - 3 y.o. Mare

BM - Barn Manager

LC - Live Cover

PB - Public Brood

1/1 - One of a kind color.

ebs - Eden Bucks

PEE/EPE/EEP/PPP/etc. - The horse's ratings listed in order: Dressage-Cross Country-Show Jumping. Example: PEE= ratings of Premium-Elite-Elite.

To - Tobiano

Sb - Sabino

Rb - Rabicano

Lp - Leopard

Z - Silver

1K = 1000$

RB - Rainbow Bridge

FR - Free Range

CC or XC - Cross Country

D - Dressage

SJ or J - Show Jumping

Mv or Mvt - Movement - Dressage Trait

Int - Intellect - Dressage Trait

Hrt - Heart - CC and Jumping Trait

Scp - Scope - Jumping Trait

Spd - Speed - CC and Jumping Trait

Str - Strength - CC and Dressage Trait

1o1 = 1 of 1 aslo, though not as common.

BC = Breeding Center

Comp = Competitions (e.g, I enter a comp every monday)

Shiny = Lots of Patterns

LW - Lethal White

Homo - Homozygous (for a certain gene)

Het/Hetero - Heterozygous (for a certain gene)

SB = Starting Bid (I have also seen OB = Opening Bid)

AB = Auto Buy

OBO = Or Best Offer

MI = Minimum Increase

Avie - Horse Avatar/Stable Avatar

Ban - Stable Banner

Reroll - A item that can be purchased to change a horseÂ’s coat pattern

Changeover/Rollover = The last day/night of the month, when the game resets to a new year. (More commonly referred to as Rollover)

Chrome - Flashy White Markings

HH - Hands High (height measurement)

And last but not least...

Eve - Our lovely owner, operator and admin of HEE. (Cadence Farms)