Irus (also Iros) was a nickname given to Arnaeus the beggar, due to his willingness to run messages for the suitors (see also Iris, the divine rainbow messenger).
Irus was the son of Actor and Aegina, and with Demonassa was the father of Eurydamas and Eurytion.
In biology, Irus is a genus of clam in the family Veneridae
IRUs are sold through capacity purchase agreements that often commit a buyer to a unit of capacity for the remaining design life of the cable.
In recent years the use of IRUs to trade capacity in all forms of cable, both submarine and subterranean, has become more commonplace and modern capacity purchase agreements take a wide variety of forms.
An IRU is a legal interest created by contractual agreement that confers an indefeasible and exclusive right of access to some or all of the capacity in a telecommunications cable system on another party.