The fourteenth
'arba`  (ar-bah')
four -- four.
`asar  (aw-sawr')
ten (only in combination), i.e. -teen; also (ordinal) -teenth -- (eigh-, fif-, four-, nine-, seven-, six-, thir-)teen(-th), + eleven(-th), + sixscore thousand, + twelve(-th).
yowm  (yome)
a day (as the warm hours),
of the second
sheniy  (shay-nee')
double, i.e. second; also adverbially, again -- again, either (of them), (an-)other, second (time).
chodesh  (kho'-desh)
the new moon; by implication, a month -- month(-ly), new moon.
at even
`ereb  (eh'-reb)
dusk -- + day, even(-ing, tide), night.
they shall keep
`asah  (aw-saw')
to do or make, in the broadest sense and widest application
it and eat
'akal  (aw-kal')
to eat -- at all, burn up, consume, devour(-er, up), dine, eat(-er, up), feed (with), food, freely, in...wise(-deed, plenty), (lay) meat, quite.
it with unleavened bread
matstsah  (mats-tsaw')
unleaved (bread, cake), without leaven.
and bitter
mror  (mer-ore')
a bitter herb -- bitter(-ness).