from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A block of commemorative stamps printed together on the same sheet but differing in design, color, value, or overprint.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A set of postage stamps with differing values, colours, etc, but printed on the same sheet.
French : se, reflexive pron. + tenant, present participle of tenir, to hold.(American Heritage® Dictionary of the English Language, Fourth Edition)
From French se tenant ("holding each other"), present participle of se tenir ("to hold each other") (Wiktionary)