loam

Short definition from Wiktionary

Noun

1. 1
   A type of soil; an earthy mixture of sand, silt and clay, with organic matter to which its fertility is chiefly due.
2. 2
   A mixture of sand, clay, and other materials, used in making moulds for large castings, often without a pattern.

Verb

1. 1
   To cover, smear, or fill with loam.

Adjective

1. 1
   Made of loam; consisting of loam.