hold one's horses

hold your horses

Wait a moment or be patient (often because you are moving too quickly or thoughtlessly). Whoa, hold your horses, kids. We're going to sing before we start eating cake. I know you're excited to see the prototype, but you all just need to hold your horses while we get set up.
See also: hold, horse
Farlex Dictionary of Idioms.

hold one's horses

Slow down, be patient, as in Dad told Kevin to hold his horses on Christmas shopping, since it was only July, or Hold your horses, I'm coming. This expression alludes to a driver making horses wait by holding the reins tightly. [Slang; c. 1840]
See also: hold, horse
The American Heritage® Dictionary of Idioms by Christine Ammer.

hold (one's) horses

To restrain oneself.
See also: hold, horse
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • hold horses
  • hold one’s horses
  • hold your horses
  • Hold your horses!
  • get ahead of (oneself)
  • get ahead of oneself
  • take it easy
  • take it/things easy
  • double buffalo
  • take things easy