noun

• (military) A servant or valet to a military officer.
  "[A]s a rule the chambers were occupied only by Stack, who had been Wilfrid's batman in the war, and had for him one of those sphinx-like habits which wear better than expressed devotions."
• (by extension, informal) A personal assistant or supporter.
  "He became my retainer, my batman, the solution to my ever-growing need for an extra pair of hands."

noun

• (Turkish units of measure) A unit of weight established in 1931 equal to 10 kg.
• (historical units of measure) A Turkish unit of weight varying by location, time, and item from 2–8 okas (about 2.5–10 kg).
  "Euery bateman [in Bagdad] maketh 7. pound and 5. ounces English waight."

verb

• (slang, climbing) To climb up or down a rope free hand (i.e. as Batman does).
  "At 16,200 feet I batmanned madly down the fixed ropes, stopping constantly to catch my breath, not sure how much longer I could continue."

verb

• (slang, climbing) Alternative letter-case form of batman.
  "He laughed, Batmanned back up to his last piece of gear and hammered a 5/8-inch angle piton into the crack with an ascending ring like any nail met with a hammer."