bailer

Short definition from Wiktionary

Noun

1. 1
   One who bails or lades.
2. 2
   A utensil, as a bucket or cup, used in bailing; a machine for bailing water out of a pit.
3. 3
   Alternative form of bailor.
4. 4
   A delivery that heads towards the bails after pitching.
5. 5
   A delivery in which the ball hits one or both bails but does not dislodge them.

Proper noun

1. 1
   A surname.