How many letters does the top answer for “place limits on (extent or amount or access)” have?

The most common answer is confine (7 letters).

Crossword clue: place limits on (extent or amount or access)

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

confine 7 letters wn-def

place limits on (extent or amount or access)

throttle 8 letters wn-def

a valve that regulates the supply of fuel to the engine

trammel 7 letters wn-def

a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)