(dated, idiomatic) In quick succession, or in great numbers.

plural of thick client

(computing) Synonym of fat client

(simile, Scotland) Very stupid

(chiefly Britain, dated) High tea or an informal late afternoon or early evening meal, more substantial than afternoon tea. / Used other than figuratively or idiomatically: see thick, tea.

(nautical) All plank that is more than four inches thick and less than twelve.

(informal, Hiberno-English) Very ignorant or foolish, sullen or in a bad temper.

plural of thick-un

(UK, historical, obsolete slang) A crown coin; its value, five shillings.

(simile) Very stupid; slow to learn or understand.