How many letters does the top answer for “shading consisting of multiple crossing lines” have?

The most common answer is crosshatch (10 letters).

Crossword clue: shading consisting of multiple crossing lines

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

crosshatch 10 letters wn-def

shading consisting of multiple crossing lines

hachure 7 letters wn-def

shading consisting of multiple crossing lines

shade with multiple crossing lines 50% similar → crosshatch