the mind > attention and judgement > beautification > types of ornamentation > jewellery > making jewellery or setting with jewels > [noun] > jeweller's tools > lapidary's wheel > part of (2)
summer1839
In various other technical applications. In a lapidary's mill: each of two opposite bars supporting the bearings of the wheels. Obsolete.
summer bar1839
the upper summer of a lapidary's wheel; cf. sense 4h.