mucin

n. nitrogenous substance present in mucus secretions

Mucins are a family of large, heavily glycosylated proteins. Although some mucins are membrane-bound due to the presence of a hydrophobic membrane-spanning domain that favors retention in the plasma membrane, the concentration here is on those mucins that are secreted on mucosal surfaces and saliva.
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Mučín is a village and municipality in the Lučenec District in the Banská Bystrica Region of Slovakia.
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Mucin /mu·cin/ 1. any of a group of protein-containing glycoconjugates with high sialic acid or sulfated polysaccharide content that compose the [more]Mucin - Community and Resources

Noun
1. a nitrogenous substance found in mucous secretions; a lubricant that protects body surfaces
(hypernym) glycoprotein
(substance-holonym) mucus, mucous secretion

(n.)
See Mucedin.
  

(n.)
An albuminoid substance which is contained in mucus, and gives to the latter secretion its peculiar ropy character. It is found in all the secretions from mucous glands, and also between the fibers of connective tissue, as in tendons. See Illust. of Demilune.