Definition of slap on
- The hotel slapped an extra $100 on his bill to cover the damage.
- The judge slapped on an additional fine.
: opening, breach
: to strike sharply with or as if with the open hand
: to cause to strike with a motion or sound like that of a blow with the open hand
: to put, place, or throw with careless haste or force
: a quick sharp blow
: a blow with the open hand
: a noise like that of a slap
: directly, smack
What made you want to look up slap on? Please tell us where you read or heard it (including the quote, if possible).