plural of Syriasm

(mineralogy) A hexagonal-trapezohedral mineral containing aluminum, calcium, chlorine, oxygen, potassium, silicon, sodium, and sulfur.

The sound or vibration from a dull, heavy, pounding blow or pulsation.

(intransitive, slang, idiomatic) To kick a fallen opponent. / (intransitive, slang, figuratively) To kick someone when they are down.