Of the individual things collectively: Existing or occurring in large numbers in a relatively small space, or at short intervals; densely arranged…

Composed of individuals or parts arranged in close order; thickly studded or planted (with something).

In later use English regional (northern). In close array; crowded together; thick, dense. Now rare.

Packed closely together.

Densely packed together, as a large number of people or things; crowded; constituting a throng or crowd; numerous, multitudinous.

that is made thick or thicker, in various senses.

Having the atoms or component parts very near together. Of aggregates of things: Dense or compact in arrangement, e.g. of thickets, etc…

Having its constituent particles closely compacted together; thick, compact. Having its (perceptibly separate) parts or constituents closely…

Closely packed (cf. tighten, v. 1b). Of a group or formation: having the individual members positioned close together. Frequently in Sport; also trans…