slaston.
/ˈslastəʊ/, /ˈslɑːstəʊ/, U.S. /ˈslæstoʊ/, South African English /ˈslæstəʊ/ South African.
A slate-like shale used (often in irregularly-shaped pieces) for paving, flooring, and tiling. Also applied to any similar material. Often used as a modifier.
ΘΚΠ
society > occupation and work > materials > raw material > stone or rock > [noun] > stone as material for paving > types of
Mitchel1607
York-paving1861
slasto1953
pebbling1971
the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > shale > others
till1672
bass1686
bat1686
blue metal1699
scallop slate1711
black shale1730
shale-shiver1794
shale1825
till-stonec1830
Wenlock shale1834
famp1836
Boghead1858
oil shale1866
paper shale1874
symon1881
paste-rock1882
slasto1953
1953 Richmond's S. Afr. All Mining Year Bk. 92 Slasto Co. of Africa (Pty.) Ltd. (Reg. Trade Mark ‘Slasto’).
1974 London Mag. Oct.–Nov. 100/2 Three bedrooms, ranch style, with big picture windows, slasto pavings.
1988 Fair Lady (Cape Town) 22 June (Suppl.) 19 The room..was very dark with a wooden ceiling, plywood panelling, a slasto fireplace.
2012 Cape Argus (Nexis) 18 Aug. 17 Gently curving paths of slasto, sleepers or gravel are a great choice.
This is a new entry (OED Third Edition, September 2019; most recently modified version published online March 2022).
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n.1953