Merriam-Webster Collegiate Dictionary - sop

 I. noun  Etymology: Middle English ~pe, from Old English ~p; akin to Old English supan to swallow — more at sup  Date: before 12th century  1. chiefly dialect a piece of food dipped or steeped in a liquid  2. a conciliatory or propitiatory bribe, gift, or gesture  II. transitive verb  (~ped; ~ping)  Date: circa 1529  1.  a. to steep or dip in or as if in liquid  b. to wet thoroughly ; soak  2. mop a SOP  abbreviation standard operating procedure; standing operating procedure