divination by the interpretation of the flame of a lamp. A type of pyromancy.

Initialism of ride me sideways.

(mineralogy) A leucocratic intrusive igneous rock, a variety of tonalite in which the plagioclase is mostly in the form of oligoclase.

(literally) One who habitually bites or chews their fingernails. / (figuratively) A situation which causes anxiety, suspense, nervousness or discomfort.