fe·da·yee 
(fĕ-dä′yē, -dä′ē, -dă′-)
(fĕ-dä′yē, -dä′ē, -dă′-)n. pl. fe·da·yeen (-yēn, -ēn)
A commando or guerrilla, especially an Arab commando operating in the Middle East.
[Arabic fidā'ī, one who sacrifices himself, from fidā', sacrifice, ransom, from fadā, to sacrifice, ransom; see pdy in the Appendix of Semitic roots.]