different between caster vs pulley

English

Alternative forms

• castor (esp. UK)

Etymology

cast +? -er; the wheel sense comes from obsolete cast (“to turn”).

Pronunciation

• (UK, General Australian, General New Zealand) IPA^(key): /?k??st?(r)/, /?kæst?(r)/
• (US, Canada) IPA^(key): /?kæst?r/
• Rhymes: -??st?(r)
• Homophone: castor

Noun

caster (plural casters)

1. Someone or something that casts

2. A wheeled assembly attached to a larger object at its base to facilitate rolling. A caster usually consists of a wheel (which may be plastic, a hard elastomer, or metal), an axle, a mounting provision (usually a stem, flange, or plate), and sometimes a swivel (which allows the caster to rotate for steering).

3. A shaker with a perforated top for sprinkling condiments such as sugar, salt, pepper, etc.

4. A stand to hold a set of shakers or cruets.
5. (automotive) The angle of the axis around which a car's front wheels rotate when the steering wheel is turned, with a vertical axis being defined as zero caster.

Derived terms

• spearcaster

Translations

See also

• caster angle
• caster sugar

Verb

caster (third-person singular simple present casters, present participle castering, simple past and past participle castered)

1. To act as a caster

Anagrams

• Cartes, Cestar, acters, carest, carets, cartes, caters, crates, creats, racest, reacts, recast, rescat, reäcts, traces

English

Etymology

From Middle English polley, pullie, from Old French poulie, polie (“a pulley, windlass”), (compare Medieval Latin polea, polegia, polegium, Middle Dutch puleye, modern Dutch poelie), of obscure origin. Perhaps connected to Middle Low German pulen (“to pull”), Old English pullian (“to pull”) . More at pull.

Alternatively, perhaps connected to Ancient Greek ????? (pólos, “pivot, hinge, axis”), from Proto-Indo-European *k?el- (“to turn”).

Pronunciation

• IPA^(key): /?p?li/
• Rhymes: -?li

Noun

pulley (plural pulleys)

1. (engineering, countable) One of the simple machines; a sheave, a wheel with a grooved rim, in which a pulled rope or chain lifts an object (more useful when two or more pulleys are used together, as in a block and tackle arrangement, such that a small force moving through a greater distance can exert a larger force through a smaller distance).

Derived terms

• pulley block

Translations

References

Verb

pulley (third-person singular simple present pulleys, present participle pulleying, simple past and past participle pulleyed)

1. (transitive) To raise or lift by means of a pulley.
   • March 30 1620, James Howell, "To Capt. Francis Bacon" in Epistolæ Ho-Elianæ

     [a mine]is digg'd out with ease, being soft, and is between a white Clay and Chalk at first; but being pulley'd up with the open Air, it receives a crusty kind of hardness

Hypernyms

• hoist
• simple machine, Simple machine

Hyponyms

• polyspast
• block and tackle
• winch

Meronyms

• bearing
• chain
• rigging
• rope
• wheel

Coordinate terms

• crane
• inclined plane
• lever
• screw
• wedge