The origin of the name "Bolsterstone" is unknown; it may a corruption of the root word "Walder" (also used in local place names, including a barrow), or may refer to two large stones in the village, which are referred to as the "Bolster Stones".
The etymology of "Bolsterstone" remains unclear; it could either be derived from a misreading of "Walder," which is found in nearby geographical designations, or it may pertain to two large rocks situated in the village referred to as the "Bolster Stones."