I. ˈ ̷ ̷| ̷ ̷ noun
Etymology: cross (III) + ruff
: a series of plays in some card games in which partners alternately trump different suits and lead to each other for that purpose
II. transitive verb
: to effect a crossruff by leading (two specified suits) alternately
crossruff spades and hearts
intransitive verb
: to effect a crossruff