child's_play
1. [ noun ] any activity that is easy to do
Synonyms: cinch picnic breeze pushover duck_soup piece_of_cake walkover snap
Examples:

"marketing this product will be no picnic"

Related terms: activity undertaking doddle walk_over
2. [ noun ] (games) play by children that is guided more by imagination than by fixed rules
Synonyms: play
Examples:

"Freud believed in the utility of play to a small child"

Related terms: diversion house doctor fireman play
Similar spelling:   child's_body
  child's_room
  child's_game