(idiomatic) Write and send (someone) a note or telegram.

plural of differentia

An early design for an aerosol can: a refillable hand-sized steel can charged with a pressurized liquefied gas and a product to be expelled as a mist or a foam. / (weaponry) A type of thermobaric w...

(transitive) Used other than figuratively or idiomatically: see pass, up. / (idiomatic, transitive) To refuse (not accept); forgo.