A sudden whirlwind or downpour of leaves.

Any agent used to make dough rise or to have a similar effect on baked goods. / (figuratively) Anything that induces change, especially a corrupting or vitiating change.

(transitive) To add a leavening agent. / (transitive) To cause to rise by fermentation. / (transitive, figuratively) To temper an action or decision.

(intransitive) To leave unannounced or without permission / To desert. To go AWOL.

An association of sports teams that plays at a level below the major leagues of a sport.

Having a quality less than the best possible.

An association of sports teams which plays at the highest skill level of its sport, especially Major League Baseball.

Of or pertaining to a major sports league; belonging to the professional level of a sport, such as US baseball. / Analogous in importance to a major league sports team. / Serious, high-level; significant

(chiefly US, idiomatic) A professional sports association at the lower levels of minor league organization.

Of inferior quality. / Amateurish, unprofessional, unpolished, juvenile.