buckle in

buckle in

To anchor or fasten oneself or another in place with a seatbelt, as in a vehicle. A noun or pronoun can be used between "buckle" and "in." Can you buckle the baby in while I put our bags in the trunk? This car is not moving until everyone is buckled in!
See also: buckle
Farlex Dictionary of Idioms.

buckle someone in

to attach someone securely with a vehicle's seat belts. (This includes airplane seat belts.) Don't forget to buckle the children in. Did you buckle in the children?
See also: buckle
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • buckle
  • buckle down
  • buckle up
  • not do (someone or oneself) any favors
  • identify with
  • orient
  • orient to
  • orient to (something)
  • spiff up
  • spiffed up
References in periodicals archive
It fits in tight spaces and between booster seats and also fits securely so seats can be folded down without removing it and does not alter the buckle in any way.
MODEL Caprice lost a pounds 1million diamond and tanzanite gemstone buckle in a nightclub.
After a two-hour hunt one of Caprice's own guards found the buckle in the ladies loo.
However, the letter was termed "terribly one-sided" by Bishop Donald Harvey of Eastern Newfoundland and Labrador, who responded, also in an open letter, that he intended to continue to support Bishop Buckle in his actions in New Westminster.
A scab is a worst-case buckle in which metal runs behind a shell crack.
"It's a beautiful land with very few people and an interesting history," said Bishop Buckle in an interview.