Answer: sandboxes

AnswerCrossword Clue
sandboxesA virtual space in which software or websites can be tested, evaluated, or developed before being made generally available
sandboxesA tropical American tree whose seed cases were formerly used to hold sand for blotting ink
sandboxesA perforated container for sprinkling sand onto wet ink in order to dry it
sandboxesSANDBOX, a children's play box filled with sand
sandboxesA shallow box or hollow in the ground partly filled with sand for children to play in