Webster's Revised Unabridged Dictionary · 1913

Crosslet

Crosslet (-lEt) , noun

[Dim. of cross.]

1.
A small cross. — Spenser
2.
A crucible. [Obsolete] — Chaucer

Crosslet , adjective

(Heraldry) Crossed again; -- said of a cross the arms of which are crossed. SeeCross-crosslet.