SOP.See Meals, 5.
Hastings' Dictionary of the Bible
Edited by James Hastings, D.D. Published in 1909
Sop. In eastern lands, where our table utensils are unknown, the meat, with the broth, is brought upon the table in a large dish, and is eaten, usually, by means of pieces of bread dipped into the common dish. The bread so dipped is called "sop". It was such a piece of bread, a sop dipped in broth, that Jesus gave to Judas, Joh_13:26, and again, in Mat_26:23. It is said "he that dippeth his hand with me in the dish," that is, to make a sop by dipping a piece of bread into the central dish.
Smith's Bible Dictionary
By Dr. William Smith.Published in 1863
sop (ψωμίον, psōmı́on): A thin, wafer-like piece of bread dipped into the common dish as a sort of improvised spoon, is thus designated in Joh_13:26 ff. See MORSEL.
International Standard Bible Encyclopedia
PRINTER 1915.
(ψωμίον, a morsel), a piece of bread dipped into sauce (Joh_13:26-30).
CYCLOPEDIA OF BIBLICAL, THEOLOGICAL AND ECCLESIASTICAL
press 1895.