12-Letter Words Containing: R,R,I,N

• an instrument that indicates whether two periodic motions are synchronous (especially an instrument that enables a pilot to synchronize the propellers of a plane that has two or more engines)

• an antineoplastic drug used to treat Hodgkin's disease

• A person or thing that wins a prize.

• be on friendly terms with someone, as if with a brother, especially with an enemy

• the fleshy part of the human body that you sit on

• the part of an animal that corresponds to the human buttocks

• in a horrifying manner

• an antibiotic (trade name Erythrocin or E-Mycin or Ethril or Ilosone or Pediamycin) obtained from the actinomycete Streptomyces erythreus; effective against many Gram-positive bacteria and some Gram-negative