Thick, n. 1. The thickest part, or the time when anything is thickest.
In the thick of the dust and smoke. Knolles.
2. A thicket; as, gloomy thicks. Drayton.
Through the thick they heard one rudely rush. Spenser.
He through a little window cast his sight
Through thick of bars, that gave a scanty light. Dryden.
Thick-and-thin block(Naut.), a fiddle block. See under Fiddle. — Through thick and thin, through all obstacles and difficulties, both great and small.
Through thick and thin she followed him. Hudibras.
He became the panegyrist, through thick and thin, of a military frenzy. Coleridge.