subs. phr. (old).1. A straw-bonnet maker; hence (2) a hatter; and (3) a wig-maker. SKULL-THATCH = a hat or wig.
1863. M. E. BRADDON, Aurora Floyd, xxiv. Ill find my SKULL-THATCHER if I can, said Captain Prodder, groping for his hat amongst the brambles and the long grass.