Yucca n. : See Flicker, n., 2.

Yucca n. : A genus of American liliaceous, sometimes arborescent, plants having long, pointed, and often rigid, leaves at the top of a more or less woody stem, and bearing a large panicle of showy white blossoms.

Example:
Can we split two conjoined Yucca plants without killing them?

Taxonomy
Yucca, ssp, Hochstätter, Trel, Engelm, McKelvey, Torr, species, Yucca filamentosa, Yucca whipplei, Yucca harrimaniae, Yucca glauca, Yucca moths, Yucca angustissima, Yucca brevifolia, flower, Yucca baccata, Yucca elata.

Defination from the web:
Yucca (49 species and 24 subspecies) covers a vast area of north- and central America. From Baja California in the west, northwards into the southwestern USA, through the drier central states as far north as Canada (Alberta province, Yucca glauca ssp. ...