n. A portable device to allow divers to breathe while under water, consisting of one or two tanks of compressed air which are strapped onto the back of the diver, and are connected by tubing to a mouthpiece through which the diver receives the air from the tanks at rate adjustable by a valve; -- called also SCUBA, SCUBA gear, or SCUBA apparatus. [ PJC ]

n. (Zool.) A small, footless, burrowing, snakelike lizard (Rhineura Floridana) allied to Amphisbaena, native of Florida; -- so called because it leaves its burrows after a thundershower. [ 1913 Webster ]

n. That which is worn under the outside clothing; underclothes. [ 1913 Webster ]

v. t. To undervalue. [ Obs. ] [ 1913 Webster ]

imp. of Undergo. [ 1913 Webster ]

v. t. To interest less than anticipated; to be dull to (a person). [ PJC ]

a. 1. Less interesting than expected; dull. [ PJC ]

2. Smaller than expected or hoped; as, an underwhelming response. [ PJC ]

n. 1. (Zool.) One of the posterior wings of an insect. [ 1913 Webster ]

2. (Zool.) Any one of numerous species of noctuid moths belonging to Catocala and allied genera, in which the hind wings are banded with red and black or other conspicuous colors. Many of the species are called red underwing. [ 1913 Webster ]

a. Weak in intellect; half-witted; silly. [ R. ] Bp. Kennet. [ 1913 Webster ]

n. Small trees and bushes that grow among large trees; coppice; underbrush; -- formerly used in the plural. [ 1913 Webster ]

Shrubs and underwoods look well enough while they grow within the shade of oaks and cedars. Addison. [ 1913 Webster ]

v. t. [ imp. & p. p. Underworked r Underwrought p. pr. & vb. n. Underworking. ] 1. To injure by working secretly; to destroy or overthrow by clandestine measure; to undermine. [ 1913 Webster ]

But thou from loving England art so far,
That thou hast underwrought his lawful king. Shak. [ 1913 Webster ]

2. To expend too little work upon; as, to underwork a painting. Dryden. [ 1913 Webster ]

3. To do like work at a less price than; as, one mason may underwork another. [ 1913 Webster ]

v. i. 1. To work or operate in secret or clandestinely. B. Jonson. [ 1913 Webster ]

2. To do less work than is proper or suitable. [ 1913 Webster ]

3. To do work for a less price than current rates. [ 1913 Webster ]

n. Inferior or subordinate work; petty business. Addison. [ 1913 Webster ]

n. 1. One who underworks. [ 1913 Webster ]

2. An inferior or subordinate workman. Waterland. [ 1913 Webster ]

n. 1. The lower of inferior world; the world which is under the heavens; the earth. [ 1913 Webster ]

That overspreads (with such a reverence)
This underworld. Daniel. [ 1913 Webster ]

2. The mythological place of departed souls; Hades. [ 1913 Webster ]

3. The portion of the world which is below the horizon; the opposite side of the world; the antipodes. [ R. ] [ 1913 Webster ]

Fresh as the first beam glittering on a sail,
That brings our friends up from the underworld. Tennyson. [ 1913 Webster ]

4. The inferior part of mankind. [ R. ] Atterbury. [ 1913 Webster ]

v. t. [ imp. Underwrote Obs. Underwrit p. p. Underwritten Obs. Underwrit; p. pr. & vb. n. Underwriting. ] 1. To write under something else; to subscribe. [ 1913 Webster ]

What addition and change I have made I have here underwritten. Bp. Sanderson. [ 1913 Webster ]

2. To subscribe one's name to for insurance, especially for marine insurance; to write one's name under, or set one's name to, as a policy of insurance, for the purpose of becoming answerable for loss or damage, on consideration of receiving a certain premium per cent; as, individuals, as well as companies, may underwrite policies of insurance. B. Jonson. [ 1913 Webster ]

The broker who procures the insurance ought not, by underwriting the policy, to deprive the parties of his unbiased testimony. Marshall. [ 1913 Webster ]

v. i. To practice the business of insuring; to take a risk of insurance on a vessel or the like. [ 1913 Webster ]

n. One who underwrites his name to the conditions of an insurance policy, especially of a marine policy; an insurer. [ 1913 Webster ]

n. The business of an underwriter, [ 1913 Webster ]