How many letters does the top answer for “to feed, as cattle, with dry food or cut grass, etc.;to furnish with hay, straw, oats, etc.” have?

The most common answer is fodder (6 letters).

Crossword clue: to feed, as cattle, with dry food or cut grass, etc.;to furnish with hay, straw, oats, etc.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

fodder 6 letters web-def

coarse food (especially for livestock) composed of entire plants or the leaves and stalks of a cereal crop