The Dublin term used for a generally undesirable ruffian also refered to as Chav or Skanger. A Boyra can be found in various locations such as alleys, flats, bushes, and working class areas. A boyra usually travells around in packs where the group is then refered to as "The Boyras" or simply just "The Boys"
Posh boy1: Damien i believe that rough bloke is a boyra
Posh boy2: Yes i believe so too. In fact there is another boyra right beside him so now we shall refer to them as the boyras.