(video games) Initialism of Sega Master System.

(military, nautical, initialism) SMS — Seiner Majestät Schiff – literally, "His Majesty's Ship" in German;

plural of SM

Not large or big; insignificant; few in number. / (figuratively) Young, as a child. / (writing, incomparable) Minuscule or lowercase, referring to written or printed letters.

In a small fashion / In or into small pieces. / (obsolete) To a small extent. / (obsolete) In a low tone; softly.

(uncountable, especially clothing, food or drink) One of several common sizes to which an item may be manufactured.

(obsolete, transitive) To make little or less. / (intransitive) To become small; to dwindle.

A facial expression comprised by flexing the muscles of both ends of one's mouth, often showing the front teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement, goodwill, or anxiety.

(transitive, intransitive) To have (a smile) on one's face. / (transitive) To express by smiling. / (intransitive) To express amusement, pleasure, or love and kindness.

A sensation, pleasant or unpleasant, detected by inhaling air (or, the case of water-breathing animals, water) carrying airborne molecules of a substance. / (physiology) The sense that detects odours.