Easton's Bible Dictionary (1897)
The Hebrew word kebir, rendered “pillow” in 1 Sam. 19:13, 16, but in Revised Version marg. “quilt” or “network,” probably means some counterpane or veil intended to protect the head of the sleeper. A different Hebrew word (meraashoth’) is used for “bolster” (1 Sam. 26:7, 11, 16). It is rightly rendered in Revised Version “at his head.” In Gen. 28:11, 18 the Authorized Version renders it “for his pillows,” and the Revised
Version “under his head.” In Ezek. 13:18, 20 another Hebrew word (kesathoth) is used, properly denoting “cushions” or “pillows,” as so rendered both in the Authorized and the Revised Version.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
BOL'STER . See Bed.