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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Slowing a horse, with "in" 7 letters:

AMBLERS: Slow-gaited horses.
REINING: Slowing a horse, with "in"
NAGS: Slow horses
GARY: Slow Horses actor Oldman
NAG: Slow horse
NAG: Slow race horse: Slang
REIN: Slow a horse, with "in"
WHOA: Slow down, horse!
REININ: Slow up a horse.