Any adversity; a trying period or event.

A form of light-hearted extortion by which children get candy on Halloween.

(firearms) A finger-operated lever used to fire a gun. / A similar device used to activate any mechanism. / An event that initiates others, or incites a response.

(transitive) To fire a weapon. / (transitive) To initiate something. / (transitive, figuratively) To spark a response, especially a negative emotional response, in (someone).

to locate by means of triangulation / to pit two others against each other in order to achieve a desired outcome or to gain an advantage; to "play both ends against the middle"

triangular

(uncountable, surveying) A technique in which distances and directions are estimated from an accurately measured baseline and the principles of trigonometry; (countable) an instance of the use of this technique.

(informal) To work; to be successful; to solve a problem; to be sufficient or adequate to fulfill a purpose.

(pathology) A disease characterized by headache, chills, fever, and soreness of muscles, caused by the presence of nematodes of genus Trichinella in the intestines and muscular tissues.

Happening every three years. / Lasting for three years.