sandboxer
nounEtymology From sandbox + -er.
1
One who plays in a sandbox.
- He had been "probably the most avid sandboxer . . . and mudder too." He smacked his lips over food and dramatic play often contained many references to food; he chewed gum ardently.1956, Lois Barclay Murphy, Personality in Young Children: Colin, a normal child, page 135:
2
Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences A process that sandboxes others.