One who travels or wanders; possibly an archaic agent noun derived from 'eyr' or 'errant'.
Formed with the '-er' suffix (indicating an agent or person performing an action), this word likely derives from 'eyr' or 'errant' roots, though usage is obscure.
The '-er' suffix is one of English's most powerful word-making tools, turning verbs and adjectives into 'someone who does that thing'—'eyrer' is a ghost of this productive process!
Complete word intelligence in one call. Free tier — 50 lookups/day.