(idiomatic) by the way; now that I think about it; indicates something brought to mind.

(idiomatic) A skinny, malnourished person or animal.

(physics) The speed at which sound is propagated through some medium under specified conditions.

(slang) To insult (someone) by showing them the back of one's fist with the middle finger extended.

The slow westward shift of the equinoxes along the plane of the ecliptic, resulting from precession of the earth's axis of rotation, and causing the equinoxes to occur earlier each year

(idiomatic) Unlikely to happen or be important in the near future, or tending to escape detection or attention.

(transitive, idiomatic) To do (a task) quicker or easier. / (transitive, idiomatic) To deal with or overcome (someone or something) quickly and without difficulty.

An order of Roman Catholic clergy, the Jesuits, having a tradition of education, theological scholarship, and missionary work; formed during the 16th century.

(chemistry) The water present in the crystals of the salts of certain metals; it is weakly bound by electrostatic forces and may normally be removed by heating.

Someone who acts as a host at a formal event. / Someone who conducts a programme of varied entertainment, for example by introducing performers to the audience. / (rap music) A rapper.