Today’s word of the day is slitheroo, meaning “to slide with a slow gliding motion; slidder.” The verb slidder, in turn, means “to slip; slide; especially, to slide clumsily or in a gingerly, timorous way” or “to slide with interruption.” Naturally, both words are related to slither, slide, sled, sledge, and sleigh. Rudyard Kipling is one of few people to use the verb slitheroo in print, though thickness of dialect makes even normal language in Captains Courageous hard to decipher.