in sporting use, a variant of by (prep). Originally in cricket, "a run scored on a ball that is missed by the wicket-keeper" (1746); later, in other sports, "position of one who is left without a competitor when the rest have drawn pairs" (1883), originally in lawn-tennis.
bye (2)
shortened form of good-bye. Reduplication bye-bye is recorded from 1709, though as a sound used to lull a child to sleep it is attested from 1630s.
实用例句
1. He stood mournfully at the gate waving bye bye.
他伤心地站在门口，挥手告别。来自柯林斯例句
2. Dickens felt compelled to return to the stage for a final good-bye.
