croisillon

From croix +‎ -ille +‎ -on.

• IPA^(key): /kʁwa.zi.jɔ̃/

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croisillon m (plural croisillons)

1. crosspiece, crossbar
2. (in a church) transept
3. (in the plural) lattice
4. the symbol #; hash, pound

• “croisillon”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.