(sports) A three-command start when racing:

(idiomatic) One will find what one is looking for under an obvious sign for it.

plural of long-vowel mark

plural of inverted question mark

plural of byte order mark

plural of high-water mark

(Buddhism) Three characteristics of all phenomena: anicca (“impermanence”), dukkha (“suffering”) and anatta (“non-self”).

plural of port-wine mark

plural of low-water mark

plural of blue check mark