Colby, Isle of Man Colby, Isle of Man Colby () is a small village in the south of the Isle of Man in the parish of Arbory. It lies on the A7 road between the towns of Castletown and Port Erin and close to the similarly sized village of Ballabeg. The name Colby is of Scandinavian origin and is derived from Kolli's Farm which was home to the lexicographer, Archibald Cregeen (1774–1841). The word Colby is thought to derive from the Viking words Col (meaning Hill) and Byr (meaning farm). The village has a railway station on the Isle of Man Steam Railway and
Port Erin carriages. Prior to this the rolling stock was stored in the open. Bus services operate directly through a depot in Bridson Street in the village to the island's capital Douglas via Port St Mary, Colby, Castletown and Ballasalla using route numbers 1, 2, 11 and 12; these run about every twenty minutes at weekdays and Saturdays, with a less frequent service at weekends and after 6.00pm. Some of these services (1c and 11b) use an alternative coastal route. The route is the island's busiest, partly because it calls at the island's airport. A late evening service also operates on Friday