thick-and-thin block

Webster's Dictionary (GCIDE)

1.The thickest part, or the time when anything is thickest. [1913 Webster]

In the thick of the dust and smoke.— Knolles.[1913 Webster]

2.A thicket; as, gloomy thicks. [Obs.] --Drayton. [1913 Webster]

Through the thick they heard one rudely rush.— Spenser.[1913 Webster]

He through a little window cast his sight Through thick of bars, that gave a scanty light.— Dryden.[1913 Webster]

Thick-and-thin block (Naut.), a fiddle block. See under Fiddle.

Through thick and thin, through all obstacles and difficulties, both great and small. [1913 Webster]

Through thick and thin she followed him.— Hudibras.[1913 Webster]

He became the panegyrist, through thick and thin, of a military frenzy.— Coleridge.[1913 Webster]