belt up
verb (adverb)
slang
to become or cause to become silent; stop talking: often used in the imperative
to fasten with or by a belt, esp a seat belt
Words nearby belt up
belt line,
belt man,
belt mountains,
belt out,
belt sander,
belt up,
belt-and-braces,
belt-tightening,
beltane,
beltcourse,
belted