Quenya 

undulav-

lick down

undulav- vb., literally "lick down" = cover (glossed "swallow" in PE17:72). Lumbulë undulávë ilyë tier "(heavy) shadow down-licked all paths", lyrical translation "all paths are drowned deep in shadow" (Nam). The pl. past tense would be unduláver (PE17:72).