odd man

plural odd men

1. In a group having an odd number of people, someone with the casting vote; an arbiter.First known use 15th c.
2. Someone who does odd jobs.First known use 18th c.

   ‘My father always kept a dog-cart, and we had three servants. We had a cook and a housemaid and an odd man.’

   1915, W. Somerset Maugham, chapter 58, in Of Human Bondage

   1 more example

   Their complexion was lustreless and clammy, although Aunt Evelyn's odd man had given them all the energy of his elbow.

   1928, Siegfried Sassoon, Memoirs of a Fox-Hunting Man, Penguin, published 2013, page 86

3. hobbiesA man who trains in company with a boat's crew, so that he can take the place of anybody who falls ill.