'gateway-attached' originates from Modern English, specifically a compound of the words 'gateway' and 'attached', where 'gateway' combined 'gate' + 'way' and 'attached' is the past participle of 'attach' meaning 'fastened to'.

'gateway' changed from Old English word 'geatweg' (from 'geat' meaning 'gate' and 'weg' meaning 'way'), and 'attached' derived from Old French 'atachier' (and Vulgar Latin '*attaccare'), eventually forming the Modern English compound 'gateway-attached'.

Initially the elements meant 'gate' + 'way' and 'to fasten'; over time the compound evolved to mean 'joined to or fixed on a gateway' in modern usage.