| canker brake n. See Christmas fern. |
| Christmas fern n. A North American evergreen fern (Polystichum acrostichoides) having pinnate leaves and dense clusters of lance-shaped fronds. Also called canker brake, dagger fern. |
| canker brake | |
noun | |
| North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds [syn: Christmas fern] |