plural of weigh-in

(chemistry) An open container having a wide end into which samples may be placed for weighing and a funnel-shaped end for subsequent transfer

(chemistry) An open container, often disposable, used for weighing samples

(idiomatic) To be disadvantageous to someone.

(chemistry) A thin-walled glass container, with a ground-glass stopper, used for weighing samples of chemical substances

(figuratively) to think carefully about what one will say.