ETYM Old Eng. level, livel, Old Fren. livel, French niveau, from Latin libella level, water level, a plumb level, dim. of libra pound, measure for liquids, balance, water poise, level. Related to Librate, Libella.
1. Establishes the horizontal when a bubble is centered in a tube of liquid; SYN. spirit level.
2. Height above ground.

Instrument for finding horizontal level, or adjusting a surface to an even level, used in surveying, building construction, and archeology. It has a glass tube of colored liquid, in which a bubble is trapped, mounted in an elongated frame. When the tube is horizontal, the bubble moves to the center.

Any of numerous insects of the order Odonata, including the damselfly. They all have long narrow bodies, two pairs of almost equal-sized, glassy wings with a network of veins; short, bristlelike antennae; powerful, “toothed” mouthparts; and very large compound eyes which may have up to 30,000 facets. They hunt other insects by sight, both as adults and as aquatic nymphs.
The largest species have a wingspan of 18 cm/7 in, but fossils related to dragonflies with wings up to 70 cm/2.3 ft across have been found.
Slender-bodied non-stinging insect having iridescent wings that are outspread at rest; adults and nymphs feed on mosquitoes etc.; SYN. snake doctor, mosquito hawk, skeeter hawk. dragon-fly + prikaži više