While this particular section appears to be a later addition to the castle complex, archaeological evidence suggests it may once have been part of a much larger fortified enclosure. The wall likely extended northwards originally, possibly following the same line as the current courtyard wall, creating a substantial defensive perimeter around the castle grounds.

Bawns were essential features of Irish castles and fortified houses from the 16th and 17th centuries, serving as walled courtyards that provided protection for both people and livestock during times of conflict. The word itself comes from the Irish 'bábhún', meaning cattle fort, which hints at their dual purpose as both defensive structures and agricultural enclosures. These walls typically stood between 10 and 15 feet high and were often fitted with defensive features like flanker towers at the corners, though simpler examples like this one at Termonfeckin might have relied more on the basic wall structure for protection.

The Termonfeckin bawn represents the kind of practical fortification that was common across the Irish countryside during the plantation period and beyond. While only a fragment remains today, its presence helps us understand how the castle complex once functioned as a complete defensive settlement, where the local population could retreat with their animals and belongings when raiders or opposing forces threatened the area. The survival of even this small section offers visitors a tangible connection to an era when such fortifications were vital for survival in rural Ireland.