small-bore

the compound adjective 'small-bore' is a straightforward combination of two english words. 'small' originates from proto-germanic smalaz, conveying the sense of narrowness. 'bore' derives from the old english verb for drilling or piercing, its nominal form coming to denote the interior diameter of a tube, particularly a firearm barrel. first used literally in the 19th century to describe firearms with a narrow caliber, the term's logic naturally extended metaphorically in the 20th century. this figurative use applies the concept of limited physical capacity to describe ideas, endeavors, or concerns deemed trivial or lacking in wide significance.

Structure: small (little) + bore (hole) small (from old english smæl, meaning narrow or slender, functioning as an adjective describing size). bore (from old english borian, meaning to pierce, functioning as a noun derived from the verb, referring to the hole or caliber).