lucky dip

Noun lucky dip has 2 senses

• lucky dip(n = noun.act) Array - a game in which prizes (e.g., candies or coins) are concealed in a container and for a small sum a player can draw one out at random; Array
is a kind of drawing, lottery

• lucky dip(n = noun.act) Array - a selection or decision purely at random; "their system of hiring people seemed to be a sort of lucky dip"
is a kind of random sampling