1412–3 (Camden) 76 In sclatpynnes emptis xx d.
1436–7 (Camden) 114 Et in sclatpynnes et tyȝlpynnes emptis iiij s.
c1440 [see sense 1a]. 1669 S. Sturmy iv. xii. 195 If you make it upon a Slat Stone,..you may wipe the Arch, that is lightly drawn by a Slat Pen.., off at pleasure.
1714 (Royal Soc.) 28 222 This resembles a Slat-Coal of a Lead colour.