Chip Up Meaning

(idiomatic, transitive) To cause something to have cracks or dents.

Example: 1959, Juliana Horatia Gatty Ewing, A flat iron for a farthing, page 81
  It were when my father were employed as mason under ' brick and mortar Benson,' as they called him, for repairs of a wall, and they were short of stones, and they chipped up the figure I be telling you of.