予よ防ぼう線せんTop 40000MeaningsNoun1. defensive perimeter; defence line; defense line; defensive measures2. precaution; safeguard; safety measure (usu. as 予防線を張る)Kanji used予in advance防prevent線linePitch accentよぼうせんComposed of予よ防ぼうprevention; protection (against); precautionNoun線せんline; stripe; stria; line (e.g. telephone line); wire; ray (e.g. X-ray); beam; line (e.g. of a railroad); track; route; …Noun