Of close tenacious substance or texture; strongly cohesive, so as to be pliable or ductile; not easily broken, divided, or disintegrated; not…

Of the nature of sinews; tough, stringy.

Resembling wire in form and texture; of tough and springy strands.

Having a texture resembling that of gristle, in toughness, etc.

Of the nature of a sinew; resembling a sinew in texture; tough, strong. Obsolete.

Tough, tenacious. Obsolete. rare.

Holding together, cohesive; tough; not easily pulled in pieces or broken.

Improperly tough, whether through drought, or through damp.

attributive. Tough as whipcord.

attributive. Pertaining to or consisting of whinstone; also figurative hard, tough.