AHAP – As Heavy As Possible

AMRAP – As Many Rounds (or Reps) As Possible

BP – Bench Press

Buy In / Cash Out – "Buy in" refers to work that must be completed before starting the main part of the workout.  "Cash out" refers to work that must be completed after finishing the main part of the workout.

C&J – Clean and Jerk

Cals – Calories (on the rower or assault bike)

CTB (or C2B) – Chest to Bar (pull-ups)

DB – Dumbbell

DL – Deadlift

EMOM – Every Minute On The Minute

FS – Front Squat

GTO (or G2O) – Ground to Overhead

HSPU – Hand Stand Push Up

HSQ – Hang Squat Clean

KB – Kettlebell

KTE – Knees to Elbows

MU – Muscle Ups

OHS – Overhead Squat

Pd – Pood, weight measure for kettlebells

PR – Personal Record

PU – Pull-ups, possibly push-ups depending on the context

Rep – Repetition

RM – Repetition Maximum.  Your 1RM is your max lift for one rep.  Your 10 RM is the most you can lift 10 times.

S2O – Shoulder to Overhead

SDHP – Sumo Deadlift High Pull

Set – A number of repetitions

SQ – Squat

Swings – Refers to kettlebell movements (American KB swings; Russian KB swings)

TGU – Turkish Get-Up

TTB – Toes to bar

WOD – Workout Of the Day