2179: Cos
From our UK edition
The unclued lights are of a specific kind. Additionally each is a legitimate inflected headword in Chambers. Elsewhere, ignore one acute accent and an apostrophe. Across 4 By the way, black weapon is a valuable curio (9, two words) 9 C.O.O.L.E.R. characters in the mail? (10, two words) 12 Types