A sudden or irregular incursion in border warfare; hence, any irregular incursion for war or spoils; a raid.
A brief excursion or attempt, especially outside one's accustomed sphere.
To participate in a foray.
To do or attempt something outside one's typical area of expertise.
The forcible inclusion or entry of an external group or individual; the act of intruding.
The insertion of a phoneme into the pronunciation of a word despite its absence from the spelling. (e.g. intrusive r)
A structure that lies within a historic district but is nonhistoric and irrelevant to the district.
Magma forced into other rock formations; the rock formed when such magma solidifies.