S1K5Y4W4R1I1T1E1
18 points
SKYWRITE is validvalid
to write in the sky by releasing a visible vapor from an airplane [v SKYWRITES, SKYWRITING, SKYWRITTEN, SKYWRITTEN, SKYWROTE] : SKYWRITER [n]
to write in the sky with vapour from a plane [v SKYWROTE, SKYWRITTEN, SKYWRITING, SKYWRITES]