1. Measuring in the third dimension other than length and breadth, or in general dimension other than length; said of a solid body; as, a timber seven inches thick. Were it as thick as is a branched oak. (Chaucer) My little finger shall be thicker than my father's loins. (1 kings xii. 10)
5. Abundant, close, or crowded in space; closely set; following in quick succession; frequently recurring. The people were gathered thick together. (Luke xi. 29) Black was the forest; thick with beech it stood. (Dryden)
9. Intimate; very friendly; familiar. We have been thick ever since. (T. Hughes)
Thick is often used in the formation of compounds, most of which are self-explaining; as, thick-barred, thick-bodied, thick-coming, thick-cut, thick-flying, thick-gro 8cf wing, thick-leaved, thick-lipped, thick-necked, thick-planted, thick-ribbed, thick-shelled, thick-woven, and the like. Thick register.
Origin: OE. Thicke, AS. Icce; akin to D. Dik, OS. Thikki, OHG. Dicchi thick, dense, G. Dick thick, Icel. Ykkr, jokkr, and probably to Gael. & Ir. Tiugh. Cf. Tight.
Origin: Cf. AS. Iccian.