Lean - Vine's Expository Dictionary of New Testament Words
Lean[ 1,,G345, anakeimai ]
to be laid up, to lie," is used of reclining at table, and translated "leaning (on Jesus' bosom)" in the AV of John 13:23, RV, "reclining" (for John 13:25 See No. 2). In John 13:28, it is translated "at the table," lit., "of (those) reclining." See GUEST, RECLINE, SIT, TABLE (at the).
[ 2,,G377, anapipto ]
lit., "to fall back" (ana, "back," pipto, "to fall"), is used of reclining at a repast and translated "leaning back, (as he was, on Jesus' breast)" in John 13:25, RV (the AV follows the mss. which have epipipto, and renders it "lying"); in John 21:20, "leaned back," the Apostle's reminder of the same event in his experience. See SIT.