straiten

/S T R EY1 T AH0 N/
verb
  1. 1

    To make strait; to narrow or confine to a smaller space.

    โ€œThe channel straitened the river through the town, made it flow faster, and caused more flooding upstream.โ€

  2. 2

    To restrict or diminish, especially financially.

    โ€œRising costs put those on fixed incomes in straitened circumstances.โ€

Source: https://en.wiktionary.org/wiki/straiten