In the city
`iyr (eer)
or (in the plural) par {awr}; or ayar (Judges 10:4) {aw-yar'}; a city (a place guarded by waking or a watch) in the widest sense (even of a mere encampment or post) -- Ai (from margin), city, court (from margin), town.
is left
sha'ar (shaw-ar')
to swell up, i.e. be (causatively, make) redundant -- leave, (be) left, let, remain, remnant, reserve, the rest.
desolation
shammah (sham-maw')
ruin; by implication, consternation -- astonishment, desolate(-ion), waste, wonderful thing.
and the gate
sha`ar (shah'-ar)
an opening, i.e. door or gate -- city, door, gate, port (-er).
is smitten
kathath (kaw-thath')
to bruise or violently strike -- beat (down, to pieces), break in pieces, crushed, destroy, discomfit, smite, stamp.
with destruction
sh'iyah (sheh-ee-yaw')
desolation -- destruction.