pilger1
/ˈpɪlɡə/English regional (east. ). Now historical
noun
A fish-spear or eel-spear.
Origin
Early 19th century; earliest use found in Robert Forby (1759–1825), philologist. Apparently from pile + gare, and hence representing a formation much earlier than the date of the earliest attestations below.
pilger2
/ˈpɪlɡə/Metallurgy
noun
Used attributive with reference to a rolling mill for reducing the outside diameter of a tube without changing the inside diameter, its two rollers each having a semicircular groove of decreasing diameter passing round the circumference, so that in conjunction they form a circular hole through which the tube can be forced on a cylindrical mandrel and which decreases gradually and increases suddenly in size during each revolution of the rollers; especially in pilger mill, pilger process, pilger roll.
Origin
Early 20th century. From German Pilger, lit ‘pilgrim’, after Pilgerschrittwalzwerk, lit ‘pilgrim's steps rolling mill’, so called in allusion to the alternate feeding in and partial withdrawal of the billet during the operation of the mill, which is said to resemble the steps of pilgrims approaching a shrine.
pilger3
/ˈpɪlɡə/Metallurgy rare
verb
[with object] To reduce the outside diameter of (a tube) in a pilger mill.
Origin
1940s; earliest use found in Metallurgia. From pilger.
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