Matrass

noun

1. A chemical vessel with a round or oval body and a long neck open at the top, serving the purposes of digestion, evaporation, etc.; a cucurbit. Also called bolt-head.
2. In horticulture, a flask-like glass employed to shelter plants or flowers from the weather or from extremes of cold and heat.
3. A round-bottomed glass flask having a long neck; a bolthead.
4. A bolt for a crossbow
5. A bolthead flask