Of, or pertaining to ferns. / Resembling or characteristic of a fern, in appearance, smell, etc. / Covered in or filled with ferns; flanked or surrounded by ferns.

(UK dialectal, Northern England, Scotland) Language; tongue. / (UK dialectal, Scotland) A national tongue (in contrast to a foreign language).

(brewing) A broad, flat vessel used for cooling liquids; a brewer's cooling vat; a keelfat.

plural of Helen Keller