simple past tense and past participle of deech

Of or relating to compulsion; compulsive.

(obsolete) Of a person: cunning, crafty. / (obsolete) Cleverly made; artfully contrived. / (now dialectal) Strange or odd; unusual.

(mineralogy) A more or less coarsely crystalline igneous rock, allied to gabbro; an aggregate of labradorite (feldspar) and hypersthene, of plutonic origin.