To laugh or giggle in a somewhat subdued or restrained way, as from nervousness or poorly-suppressed amusement. / (obsolete) To teeter; to seesaw.

A nervous or somewhat repressed giggle.

(slang, vulgar, chiefly in the plural) A woman's breast.

present participle of titter

The act of one who titters.

A group of magpies.

simple past tense and past participle of titter

plural of titter

plural of tittering

plural of titterer