umbrella fern: large Australasian fern with fanlike repeatedly forked fronds; sometimes placed in genus Gleichenia
fern: any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores
insurability: the quality of being insurable; the conditions under which an insurance company will issue insurance to an applicant (based on standards set by the insurance company)