The Collaborative International Dictionary of English v.0.48:
Ranine \Ra"nine\ (r[=a]"n[imac]n), a. [L. rana a frog.] 1. (Zool.) Of or pertaining to the frogs and toads. [1913 Webster] 2. (Anat.) Pertaining to, or designating, a swelling under the tongue; also, pertaining to the region where the swelling occurs; -- applied especially to branches of the lingual artery and lingual vein. [1913 Webster]