a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive

someone new to a field or activity

The lever pressed by the finger to discharge a firearm, Electronics A pulse or circuit that initiates the action of another component, A catch to hold the wheel of a carriage on a declivity, verb_ put in motion or move to act, release or pull the trigger on, transitive verb_ To set off; initiate, To fire or explode (a weapon or an explosive charge)

A thin, flat or convex slab of hard material such as baked clay or plastic, laid in rows to cover walls, floors, and roofs, A hollow fired clay or concrete block used for building walls, A similar slab or plate of pottery, glazed and often decorated, used for ornamental pavements, revetments to walls, etc.; also, a like slab of porcelain, glazed and plain or decorated; an encaustic tile; also, a slab of stone or marble used with others like it in a pavement or revetment, verb_ cover with tiles, computing To arrange in a regular pattern, with adjoining edges (applied to tile-like objects, graphics, windows in a computer interface), transitive verb_ To cover with tiles, To protect from the intrusion of the uninitiated, To cover or provide with tiles