1.Definition: (of darkness) densely dark
"Thick night", "Thick darkness"
2.Definition: (used informally) associated on close terms
"The two were thick as thieves for months"
3.Definition: (used informally) stupid
4.Definition: abounding; having a lot of
"The top was thick with dust"
5.Definition: hard to pass through because of dense growth
6.Definition: having a short and solid form or stature
"A thickset young man"
7.Definition: having component parts closely crowded together
"Thick crowds", "A thick forest", "Thick hair"
8.Definition: not thin; of a specific thickness or of relatively great extent from one surface to the opposite usually in the smallest of the three solid dimensions
"An inch thick", "A thick board", "A thick sandwich", "Spread a thick layer of butter", "Thick coating of dust", "Thick warm blankets"
9.Definition: relatively dense in consistency
"Thick cream", "Thick soup", "Thick smoke", "Thick fog"
10.Definition: spoken as if with a thick tongue
"The thick speech of a drunkard"