highball

high +‎ ball

highball (plural highballs)

1. A cocktail made from a spirit plus soda water etc.
2. (rail transport) An all clear or full speed ahead signal.
3. (climbing) A very high bouldering problem, often with a hard landing.
   • 2014, EpicTV.com

     Austrian all rounder Alex Luger climbs what he describes as a highball boulder problem and what most people would call a solo.

• highball glass

• Japanese: ハイボール, ハイ

highball (third-person singular simple present highballs, present participle highballing, simple past and past participle highballed)

1. To make an estimate which tends toward exaggeration.

   If we highball the price, it comes out to $240. If we lowball it, it's closer to $200.

2. (US, slang, possibly dated) To move quickly; to hightail.
   • 1959, Steam's Finest Hour, edited by David P. Morgan, Kalmbach Publishing Co. (photo caption):

     Booster-equipped 628 highballs west at Glen Lake, Minn., back in 1947.

• (estimate): lowball