verb - to make small adjustments to an engine or other mechanical device to ensure it is working properly and efficiently
noun - a pattern of broken or jagged checks, typically in black and white, resembling the shape of a dog's tooth
verb, American English - to make a length of rope or hair by twisting three or more pieces over and under one another
noun - a fictional village in the Shire, in J.R.R. Tolkien’s world of The Lord of the Rings and The Hobbit