If your plan includes prescription drug coverage, you may have to pay coinsurance or a copayment when you buy your prescriptions. See Medicare Prescription Drug Plans below, but note that under a Medicare Advantage Prescription Drug plan, you wouldn't be paying a separate premium for the prescription drug coverage.
Definition of gratis. Did You Know? Gratis comes from the Latin word for favor; so in English a party favor is a small item given gratis to everyone attending a party. Gratis is used as both an adjective (The drinks were gratis) and an adverb (Drinks were served gratis). But however it's used, it means free.
The Collaborative International Dictionary of English v.0.48: grommet \grommet\ (gr[o^]mm[e^]t), n. [F. gourmette curb, curb chain, fr. gourmer to curb, thump, beat; cf. Armor. gromm a curb, gromma to curb.] 1. A ring formed by twisting on itself a single strand of an unlaid rope. Sometimes written grummet. [1913 Webster] 2.