someone who argues noisily or angrily
"The angry crowd grew into a wrangling mob as the mayor tried to explain the new parking rules."
a cowboy who takes care of the saddle horses
"The wrangler checked every saddle horse in the corral to make sure they were calm before the riders arrived."
Someone who wrangles or corrals.
"The experienced cattle wrangler rounded up the stray herd before the sun went down."