Carswell \c(a)-rswe-ll, car(s)-well\ as a boy's name is of Old English origin, and the meaning of Carswell is "well where the watercress grows". Place name. Carswell has 1 variant form: Caswell. For more information, see also the related name Cresswell. Baby names that sound like Carswell are Creswell and Creswill. View a list of the 2 names that reference Carswell.