Madrepore ("mother of pores") is a
coral of the genus
Madrepora, found often forming reefs or islands in tropical locations. They reproduce in three separate ways as discovered by the Victorian marine zoologist Anna Thynne (1806-1866).
The name was formerly applied universally to any stone coral.
References
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.