boop /buːp/noun 2verb 2forms 3 noun2 •(informal) A gentle or playful tap or strike, especially on the nose. •A low-pitched beeping sound.When something important happened, a polite sort of boop went off, and up in the right-hand corner of your screen, above the copy, a word or two appeared: Urgent, Bulletin, Late Stocks, whatever. — 1989 verb2 •(informal) To strike gently or playfully; to bop (especially on the nose).He spun around and booped me on the nose. — 2013 •To produce a low-pitched beeping sound.The music on “LP” is almost entirely unnatural, booping and puffing, buzzing and ticking in tones no acoustic instrument would make. — 2009 formsbooped · booping · boops