Strong's Definition
from 3722; a lid (used only of the cover of the sacred Ark)
KJV Usage: mercy seat
STEPBible — Tyndale Abridged Hebrew Lexicon
כַּפֹּרֶת (kap.po.ret) — mercy seat. 1) mercy-seat, place of atonement 1a) the golden plate of propitiation on which the High Priest sprinkled the seat 7 times on the Day of Atonement symbolically reconciling Jehovah and His chosen people 1a1) the slab of gold on top of the ark of the covenant which measured 2.5 by 1.5 cubits; on it and part of it were the two golden cherubim facing each other whose outstretched wings came together above and constituted the throne of God
UBS Dictionary of Biblical Hebrew
noun f · כפר
Cover
cover, lid (of the ark of the covenant) = a flat, rectangular object with two golden figures with wings on its top, made out of hammered gold, ► and used to cover the Covenant Box, which represented the presence of YHWH among his people; this is also the place where, once a year, on the Day of Atonement, blood from sacrificial animals was sprinkled; ≈ associated with atonement
EXO 25:17 · EXO 25:18 · EXO 25:19 · EXO 25:20 · EXO 25:20 · EXO 25:21 · EXO 25:22 · EXO 26:34 · EXO 30:6 · EXO 31:7 · EXO 35:12 · EXO 37:6 · EXO 37:7 · EXO 37:8 · EXO 37:9 · EXO 37:9 · EXO 39:35 · EXO 40:20 · LEV 16:2 · LEV 16:2 · LEV 16:13 · LEV 16:14 · LEV 16:14 · LEV 16:15 · LEV 16:15 · NUM 7:89 · 1CH 28:11
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
כַּפֹּרֶת n. propitiatory, late techn. word cover over sin: the older explan. cover, lid has no justification in usage base