(transitive) To fasten with a buckle. / (intransitive, idiomatic) To fasten one's seat belt or safety belt.

(chiefly US, idiomatic) A warning or call to pay attention; an advisory notice; a notice of what is to happen; a holler.

With head directly above the neck, eyes front. / Alert; vigilant

(idiomatic) To become less serious and more cheerful or casual; to relax.

(transitive, informal) To contact someone, especially with a definite purpose. / (intransitive, informal) To take an intoxicating drug.

(rugby) The act of taking a pass from the dummy half and running straight into the opposition's defensive line without looking to pass.

Alternative form of knocker-up

(transitive) To absorb (fluid). / (slang, chiefly with "to") To adulate or flatter somebody excessively, generally to obtain some personal benefit or favour. / To fellate (a person)

To clean up (liquid) with a mop, rag, sponge, or other cleaning device. / (informal) To fix problems; to correct or repair.

(intransitive) To become more upright / (intransitive) to become more lively or enthusiastic. / (transitive) To cause to be more upright, straighten up