The definition of thick is great depth or dense.(adjective)
An example of thick used as an adjective is the phrase a thick steak which means a steak which is over one inch in depth.
Thick is defined as deeply, heavily or closely together.(adverb)
An example of thick used as an adverb is the phrase "frosting laid thick on a cake" which means a cake with lots of frosting on it.
See thick in Webster's New World College Dictionary
Origin: ME thikke < OE thicce, thick, dense, akin to Ger dick < IE base *tegu-, thick, fat > OIr tiug
See thick in American Heritage Dictionary 4
adjective thick·er, thick·est
Origin: Middle English thicke
Origin: , from Old English thicce; see tegu- in Indo-European roots.
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