society > communication > telecommunication > telegraphy or telephony > telegraphy > telegraph > [noun] > types of > recording telegraphs > parts of (2)
(a) a reel on which the paper record of a printing telegraph is wound; (by extension) the paper record itself; (b) a reel on which telegraph wire is…
The flanged core around which a material serving as a recording medium is wound; esp. one holding magnetic tape or photographic film. Hence: a…