Players use a lot of shorthand terms to put across their message faster. This is an attempt to bring them all in one place. I am putting here whatever comes to my mind.

vo - Vendetta Online
gf - good fight
wc - wrong channel
pew - fight (pvp)
roid - asteroid
csr - Corporate Sector Run
boat - ship

Ships:
rev - Revenent
cent - Centurion
orion rev / rev c - Orion Centurion Rev C
ibg - Itani Border Guardian
csl - Centurion Superlight
hog - Warthog
hog2/3/4 - Warthog MkII/III/IV
WTD - Warthog Territorial Defender
hound - Corvus Greyhound
vult - Vulture
svg - Serco Vulture Guardian
corvult - Corvus Vulturius
rag - Ragnarok
flying coffin - Hornet
moth - Behemoth
bhm - Behemoth Heavy Miner
bhm2 - Behemoth Heavy Miner MkII
xc - Behemoth XC
maud - UIT Marauder
cormaud - Corvus Marauder
tungmaud - Tunguska Marauder
tungtaur - Tunguska Centaur
craptor - TPG Raptor
udv - UIT Raptor UDV
valk - Itani Valkyrie
idf - IDF Valkyrie Vigilant
x1 - Valkyrie X-1
prom - Serco Prometheus
skyprom - Serco SkyCommand Prometheus

cappie/capship - capital ship
dent - Trident
connie - TPG Constellation Heavy Transport
don - TPG Teradon Frigate
hac - Heavy Assault Cruiser

Weapons:
gems - Gemini Missile Launcher
flare - Starflare/Sunflare Rocket Launcher
swarm - Chaos Swarm Missile Launcher
gat - Gatling Cannon MkII
qgat - Hive Queen Gatling Canon
neut{2/3} - Neutron Blaster {MkII/III}
cwm - Corvus Widowmaker
lenb - Law Enforcement Neutron Blaster
pcb - Power Cell Blaster
posi - Positron Blaster
mposi - Mega Positron Blaster
hposi - Hive Positron Blaster
aap - Axia Accelerated Positron Blaster
cupb - Corvus Ultra Positron Blaster
lmine - Lightning Mine Launcher
grav mine - Gravity Mine Launcher
tu mine - Tellar-Ulam Mine Launcher
ava - Avalon Torpedo Launcher

Hive:
qcore - Hive Queen Processor Core
qdm - Hive Queen Defense Matrix
qbeam - Hive Queen Mining Beam
levi - Leviathan

Other:
hdpc - High Density Powercell
ihdpc - Improved High Density Power Cell
fcp - Fused Composite Plating
sss - Synthetic Silksteel

Kos- kiss on sight
Smurf - Itani
Toaster - serco
Lemonhead- uit

I always considered the Centaur the "flying coffin"

/2c

Because I am a vampire, you see...

rat - pirate
unrat - unaligned pirate (npc)
mp - mega positron blaster
booty - cargo carried by a player or an npc ship
noodles - nodules (hive drop or commodity)

Others:
ffsa - Fluid Formable Silksteel Alloy
rb - Reinforced Bulkhead
mca - Merged Cybernetics Array
mmcs - Milinar Master Computing System
iba - Internal Bulkhead Assembly
eha - External Hull Assembly

goli - Goliath class freighter
connie/consti/conney - TPG Constellation Heavy Transport
taur - Centaur

EDIT:
pew - !consensual! PvP fight

Others:

UIT - Union of Independent Territories

uc - Ultra Charge Power Cell

popcorn gun/pocket sand - Flechette Cannons

xt - BioCom Vulture XT

chat symbols:

o/ - waving

o7 - saluting

Infiniturbo - turbo with out battery drain
sausage - goli
burnt sausage - goli that is damaged and on fire

Hulkyard - a collection of multiple capital ship hulks in an area.
Voy - NPC convoys.