The seeds are brown with a hard casing.

Every rib showed through the hard rubbery casing of muscle.

The hard casing of exterior reality seemed to have been broken through, and everything disclosed its inner being.

The stone is iron rich which works outwards as the stone is weathered to give a hard casing.

The larva lives inside a smaller hard casing inside the artichoke and this is released in autumn.

The plant produces many seeds with a hard, prickly casing.

It was also more reliable thanks to its hard casing.

They appear after an embryo has grown for five or six days, its cells subdividing within the hard casing of the egg.

In addition, rigorous brushing and heat styling, rough scalp massage can damage the cuticle, the hard outer casing of the hair.

In 1924 Kotelnikov for the first time applied the soft packing of parachute instead of a hard casing.