WordNet (r) 3.0 (2006):

aloha
    n 1: an acknowledgment that can be used to say hello or goodbye
         (aloha is Hawaiian and ciao is Italian) [syn: aloha,
         ciao]

The Free On-line Dictionary of Computing (19 January 2023):

Aloha

    (From the Hawaiian greeting) A system of
   contention resolution devised at The University of Hawaii.
   Packets are broadcast when ready, the sender listens to
   see if they collide and if so re-transmits after a random
   time.  Slotted Aloha constrains packets to start at the
   beginning of a time slot.  Basic Aloha is appropriate to long
   propagation time nets (e.g. satellite).  For shorter
   propagation times, carrier sense protocols are possible.

   (1995-12-10)