"loop formed by fastening a running knot or slip-knot," mid-15c., perhaps from Old French nos or cognate Old Provençal nous "knot," from Latin nodus "knot" (from PIE root *ned- "to bind, tie"). Rare before c. 1600.
noodle
nook
nookie
noon
noonday
noose
nopal
no-parking
nope
no-place
nor