Resinous

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[L. resinous: cf. F. résineux. See Resin.]
Of or pertaining to resin; of the nature of resin; resembling or obtained from resin.

Resinous electricity (Elec.), electricity which is exited by rubbing bodies of the resinous kind. See Negative electricity, under Negative.

Of, relating to, or derived from a resin.

The adjective has one meaning:

Meaning #1: having the characteristics of pitch or tar
  Synonyms: pitchy, resiny, tarry