hee-haw vs titter

hee-haw

• To utter the cry of an ass or donkey. 

• The cry of an ass or donkey. 

• Nothing. 

• The cry of an ass or donkey. 

titter

• To laugh or giggle in a somewhat subdued or restrained way, as from nervousness or poorly-suppressed amusement. 

• A nervous or somewhat repressed giggle. 

• A woman's breast.