1. A call or greeting, informal. An acknowledgement of notice.
2. A more formal or greater acknowledgement or greeting than aru
3. An acknowledgement response to aru
*** Joe just entered the room.
*** BetterThanJoe just entered the room.
Kerr: Aruga, BetterThanJoe!
*** JoeBob just entered the room.
Kerr: Aru, JoeBob.
word used by recon marines, shouted loudly three times as a battlecry, came about when recon marines mimicked the sound a submarine makes during a lockout, can be used as a statement of agreement
ARUGA! ARUGA! ARUGA! , "great weather isnt it john" "ARUGA"
when you see a good-looking girl/guy. you say "aruga".
(a good-looking girl/guy walks past)
"aruga" the guys says.
replacement for arg... gives arg some texture