Wiktionary
vb. 1 (context intransitive with an indication of weight English) To undergo a weigh-in. 2 (context transitive English) To subject to a weigh-in. 3 (context intransitive with "at" English) To weigh. 4 (context intransitive idiomatic English) To bring in one's weight, metaphorically speaking, to bear on an issue; (non-gloss definition: frequently construed with '''on''' or '''with'''.)
Usage examples of "weigh in".
As the lieutenant took it for granted that the boat had been swept out with the ebb, he determined to get under weigh in pursuance of his orders, pick up the corporal, if he could find him, and then proceed to Portsmouth, which was the port of his destination.
What was in the metal under his feet that would weigh in the balance against his love for them?
It was Purcell, as usual, who was the last to weigh in with his point of view.
His whole purpose was to get Washington and Gates to weigh in on his side.
She eyed, with some respect, a large, toothy saw run by a man who looked to weigh in at a hundred pounds flat.
He would probably weigh in at two hundred and forty pounds against Fitz's one-eighty.
Appraising the slave dealer, Abdullah estimated that he must weigh in excess of two and a half hundred-weight, possibly as much as three, but he would have been willing to wager that thick, firm muscles underlay all that fat, for weaker men did not choose as personal weapon the Danish axe, which required great strength to properly use, and a specimen of that fearsome weapon was precisely what lay in a decorative rack, near to the black man's hand.