noun
plural whiffs
[count] :a slight smell of something :an odor that is weak
[singular] :a slight trace or indication
[count] baseball informal :strikeout
verb
whiffs; whiffed; whiffing
US informal
[+ obj] :to notice (a smell)
baseball
[+ obj] of a pitcher :to cause (a batter) to be out by pitching three strikes
[no obj] of a batter :to make an out by getting three strikes
to fail to hit (something) [+ obj]