And if it be on her bed
mishkab (mish-kawb')
a bed (figuratively, a bier); abstractly, sleep; by euphemism, carnal intercourse -- bed(-chamber), couch, lieth (lying) with.
or on any thing
kliy (kel-ee')
something prepared, i.e. any apparatus (as an implement, utensil, dress, vessel or weapon) -- armour (-bearer), artillery, bag, carriage, + furnish, furniture, instrument, jewel, that is made of, one from another, that which pertaineth, pot, + psaltery, sack, stuff, thing, tool, vessel, ware, weapon, + whatsoever.
whereon she sitteth
yashab (yaw-shab')
to sit down (specifically as judge. in ambush, in quiet); by implication, to dwell, to remain; causatively, to settle, to marry
when he toucheth
naga` (naw-gah')
beat, (be able to) bring (down), cast, come (nigh), draw near (nigh), get up, happen, join, near, plague, reach (up), smite, strike, touch.
it he shall be unclean
tame' (taw-may')
to be foul, especially in a ceremial or moral sense (contaminated) -- defile (self), pollute (self), be (make, make self, pronounce) unclean, utterly.
until the even
`ereb (eh'-reb)
dusk -- + day, even(-ing, tide), night.