charm

1 charm /ˈtʃɑɚm/ noun
plural charms
1 charm
/ˈtʃɑɚm/
noun
plural charms
Britannica Dictionary definition of CHARM
1 
[count] : something that is believed to have magic powers and especially to prevent bad luck
2 
[count] : a small object that is worn on a chain or bracelet — see color picture on this page
3 
: a quality that causes someone or something to be very likeable : an attractive quality
[count]
[noncount]

the third time is the charm

— see 1third

work like a charm

: to produce a desired result very easily and effectively : to work very well

— charmless

adjective [more charmless; most charmless]
2 charm /ˈtʃɑɚm/ verb
charms; charmed; charming
2 charm
/ˈtʃɑɚm/
verb
charms; charmed; charming
Britannica Dictionary definition of CHARM
[+ object]
1 
: to put a spell on (someone or something)
2 
a  : to cause (someone) to like you or to do what you want by being nice, friendly, etc.
b  : to attract (someone) by being beautiful or welcoming

— charmer

noun, plural charmers [count]