field day noun
plural ∼ days [count] : a day of outdoor sports and athletic competition for school children
▪ the fifth grade's annual field day
▪ the fifth grade's annual field day
have a field day
: to get a lot of pleasure and enjoyment from doing something — used especially to describe getting enjoyment from criticizing someone, making fun of someone, etc. ▪ If word of his involvement in this scandal ever leaks out, the newspapers are going to have a field day. ▪ Journalists have had a field day with this scandal.
