From an unused root meaning to accumulate; treasure -- riches, wealth.
H5233. nekes
[נֶ֫כֶס] noun masculineJoshua 22:8 only plural נְכָסִים riches, treasures (probably Assyrian or Aramaic loan-word, compare Assyrian nikâsu, property, wealth, gain, DlHWB 463, Syriac wealth; on derivation from Assyrian nikâsu, cut off, hew down, behead, etc., Syriac slay, נְכַס ᵑ7, Late Hebrew נָכַס id., through meaning cattle for slaughter, compare Frä98 HptHebraica.iii (Jan.1887), 107 ff. SchwIdioticon 120f. Brockad voc.); — 22:8 (P), 2 Chronicles 1:11-12, Ecclesiastes 6:2 (all "" כָּבוֺד עשֶׁר,), 5:18 ("" עשֶׁר).