A pith helmet.

(astronomy) one day of solar time, the time between successive noons; the time in which a planet such as Earth apparently rotates once around its axis, relative to the sun (on Earth about 24 hours as an average - the length of solar day is not constant throughout the year)

(anatomy) A complex network of nerves and ganglia, located within the abdomen behind the stomach.

(astronomy) A violent explosion in the Sun's atmosphere.

Any fly of the insect family Stratiomyidae, which resemble wasps.

(law, business) The person who owns and controls a sole proprietorship.

In a solemn manner.

The quality of being deeply serious and sober or solemn. / An instance or example of solemn behavior; a rite or ceremony performed with reverence.

(intransitive) To continue or persist, despite adversity or difficulty.

(physics) One of the three fundamental structural phases of matter in which the cohesive force of matter is strong enough to keep the molecules or atoms in the given positions, restraining the thermal mobility.