The term 'layer' can refer to many different things. GILD (4 letters) is a verb meaning to COVER something with a thin layer of gold or other metal. COVERING (8 letters) is a noun referring to something that covers or envelops, such as a layer of fabric or paint. STRATIFY (8 letters) is a verb meaning to divide into layers or strata. COVER (5 letters) is a verb meaning to put something over or around something else. CRUST (5 letters) is a noun referring to a hard outer layer, such as the CRUST of bread or the CRUST of the Earth. BED (3 letters) is a noun referring to a layer of material, such as a BED of soil or a BED of rocks. OVERLAY (7 letters) is a verb meaning to COVER or provide a layer over something else. PEEL (4 letters) is a verb meaning to remove the outer layer of something. ROW (3 letters) is a noun referring to a line of people or things arranged in a layer. HEN (3 letters) is a noun referring to a female chicken. PLY (3 letters) is a noun referring to a layer of material, such as plywood. COAT (4 letters) is a noun referring to a layer of material, such as a COAT of paint. TIER (4 letters) is a noun referring to a layer or ROW of something. OZONE (5 letters) is a noun referring to a layer of gas in the atmosphere. STORY (5 letters) is a noun referring to a layer of a building. STRIA (5 letters) is a noun referring to a thin layer or stripe. LAMINA (6 letters) is a noun referring to a thin layer or plate. STRATUM (7 letters) is a noun referring to a layer of rock or soil.