ballpark

UK: ˈbɔːlpɑːk | US: ˈbɔːlpɑːrk

Definition
  1. n. 1. A baseball stadium or field.

  2. n. 2. An approximate range or estimate (e.g., "in the ballpark of $1,000").

  3. adj. Roughly accurate; approximate (e.g., "a ballpark figure").

Structure
ball <spherical object, game>park <enclosed outdoor space>
Etymology

The term "ballpark" originated in the late 19th century in American English, combining "ball" (referring to baseball) and "park" (a public space for recreation). By the mid-20th century, it metaphorically extended to mean an approximate range or estimate, likely influenced by the idea of a broad, flexible area (like a playing field) rather than a precise point.

Examples
  1. The new ballpark can seat over 40,000 spectators.

  2. Can you give me a ballpark estimate for the project cost?

  3. Her guess was in the right ballpark but not exact.

  4. The team practiced daily at the local ballpark.

  5. We’re aiming for a ballpark figure by the end of the week.