nabilis

nabilis [ML] 1 able to swim or float; b (of artefact). ~is ‥ i. ad nandum habilis Osb. Glouc. Deriv. 369.  b cui cratere corium bovinum superducentes non solum ~em [v. l. nobilem] sed et aquis impenetrabilem reddunt Ailr. Nin. 10. 2 that one can swim or float in, that facilitates swimming or floating. [aqua] est labilis, ~is, potabilis Natura Deorum 15 (v. labilis 2).