during
dur.ing \.d(y)u.r-in\ pp [ME, fr. prp. of duren to last, fr. OF durer, fr. L durare to] harden, endure, fr. durus hard; perh. akin to Skt a-ru wood - more at TREE 1: throughout the duration of {swims every day ~ the summer} 2: at a point in the course of : IN {takes his vacation ~ July}