/fel"oh di see", -say"/ , n. , pl. felones-de-se /fel"euh neez'di see", -say", feuh loh"neez-/ , felos-de-se /fel"ohz di see", -say"/ .
1. a person who commits suicide or commits an unlawful malicious act resulting in his or her own death.
2. the act of suicide.
[ 1645-55; felo a felon + de in respect to, of + se oneself ]