Hail (ice); “Hold the hail” (hold the ice)

 
Newspapers.com
6 June 1922, Oklahoma City (OK) Times, “Chatter of Soda Jerkers Has a Jazz Flavor All Its Own, Experts Declare,” pg. 7, col. 7:
“Sky juice, sky high, heavey on the hail!” and you get a “tall” glass of water with a plentitude of ice, and if you think that hail isnt ice try putting it on a red hot stove.
   
Newspapers.com
25 May 1934, Daily News (New York, NY), “Mainly About Manhattan” by John Chapman, pg. 60, col. 3:
Add soda squirt slang, from Tommy McCord.—One limey,,,a toasted English muffin. Hold the hail...no ice. Eighty-four...a customer who tips. Eighty-six... one who doesn’t…Fifty-one...hot chocolate. Eighty-one...a glass of water. Freeze one...frosted chocolate.
 
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26 October 1937, Stuart (FL) Daily News, “Ye Editor’s Easy Chair,” pg. 2, col. 1:
“Hold the hail.” (Wanted without ice).
 
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10 August 1941, Atlanta (GA) Constitution, “The Code that Speeds Soda Fountain Service” by Yolande Gwin, Magazine, sec. D, pg. 5, col. 7:
“Hold the hail” means a drink without ice, ...
 
Newspapers.com
10 July 1985, The Times-Mail (Bedford, IN), “Soda jerk unique on American scene” by Ink Mendelsohn, pg. 5, col. 4:
HOLD THE HAIL—no ice