Crowell \c-rowe-ll, cro-well\ as a boy's name is of Old English origin, and the meaning of Crowell is "well at the cross". Place name. The "cross" might refer to a spot where two roads cross.
Baby names that sound like Crowell are Caroll and Coryell. Other similar baby names are Cromwell, Carswell, Caswell, Creswell and Rowell.