ˌ ̷ ̷ ̷ ̷ˈsirēəm noun
Usage: capitalized
Etymology: New Latin, from platy- + Greek kērion honeycomb (from kēros wax) — more at cereus
: a genus of tropical Old World ferns (family Polypodiaceae) that are mostly epiphytic and have large flat lobed fronds often resembling the antlers of a stag — see staghorn fern