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printing machine, which is a knife to remove superfluous coloring matter; the doctor, or auxiliary engine, called also donkey engine.

A stupid or obstinate fellow; an ass. Donkey engine, a small auxiliary engine not used for propelling, but for pumping water into the boilers, raising heavy weights, and like purposes. -- Donkey pump, a steam pump for feeding boilers, extinguishing fire, etc.; -- usually an auxiliary. -- Donkey's eye (Bot.), the larg…

An auxiliary part of a machine which supplies or leads along the material operated upon.

A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal. Raymond.

p. p. of Fly; -- often used with the auxiliary verb to be; as, the birds are flown.

A mechanical contrivance, an auxiliary machine, or a subordinate part of a machine, rendering convenient service, and often supplying the place of a boy or attendant who was commonly called Jack; as:

y of the other parts of a machine, as, in some marine engines, a shaft, driven by a small auxiliary engine, for independently operating the valves of the main engine to insure uniform motion.

A preliminary or auxiliary proposition demonstrated or accepted for immediate use in the demonstration of some other proposition, as in mathematics or logic.

One of a class of auxiliary numbers, devised by John Napier, of Merchiston, Scotland (1550-1617), to abridge arithmetical calculations, by the use of addition and subtraction in place of multiplication and division.

An auxiliary verb qualifyng the meaning of another verb, by expressing: (a) Ability, competency, or possibility; -- now oftener expressed by can. How may a man, said he, with idle speech, Be won to spoil the castle of his health ! Spenser. For what he [the king] may do is of two kinds; what he may do as just, and what…

conjugation (Gram.), a conjugation formed by the use of the simple verb with one or more auxiliaries.

Any additional or auxiliary mass of masonry used to stiffen a wall. See Buttress.

A melodic embellishment consisting of the quick alternation of a principal tone with an auxiliary tone above it, usually the next of the scale; --called also the inverted mordente.

An auxiliary rope to strengthen a mast. Preventer bolts, or Preventer plates (Naut.), fixtures connected with preventers to reënforce other rigging. -- Preventer stay. (Naut.) Same as Preventer, 3.

cipal of a faction, a school, a firm, etc.; -- distinguished from a subordinate, abettor, auxiliary, or assistant.

uction of other goods, such as tools and raw material; -- called also instrumental goods, auxiliary goods, intermediate goods, or goods of the second and higher orders, and disting. from consumers' goods.

Indicating or specifying some relation. Relational words, as prepositions, auxiliaries, etc. R. Morris.

In a variable expansion central-valve engine, a small auxiliary engine for automatically adjusting the steam distribution to the load on the main engine. [Webster 1913 Suppl.]

An auxiliary watch chain, secured to the clothes, usually out of sight, to prevent stealing of the watch.

One who occupies a subordinate, inferior, or auxiliary place; a delegate deputy; one who is second or next to the chief officer; as, the secondary, or undersheriff of the city of London. Old Escalus . . . is thy secondary. Shak.