Esperanto

Noun

trefo ‎(accusative singular trefon, plural trefoj, accusative plural trefojn)

1. (card games) The suit of clubs, marked with the symbol ♣.

See also

Suits in Esperanto · emblemoj (layout · text)
kero	karoo, rombo	piko	trefo

Ido

Etymology

From Esperanto trefo, from French trèfle.

Noun

trefo (plural trefi)

1. (card games) The suit of clubs, marked with the symbol ♣.