uptoss noun 2verb 2forms 3 noun2 •A tossing up.Sometimes its sky line was broken by an uptoss from some one overpowering blast. — 1917 •That which is tossed up. verb2 •To toss up.[…] and brasses reflective Gleam in the sun, and away to the clouds uptoss the refulgence: […] — 1888 •To be tossed up. formsuptossed · uptossing · uptosses