Wet

mouiller = to wet (pronounced moo - yay)
se mouiller = to get wet, to wet oneself

For example:
mouiller le maillot = to give one's best (in sports. un maillot = a shirt or jersey)
ça mouille! = it rains!
il a les cheveux mouillés = his hair is wet

les mouillettes (feminine) are thin, finger-like pieces of bread that one can use to dip into un œuf à la coque (boiled egg):

Greetings

Trying to shed some light on the various French greetings:

• bonjour = hello, can be used pretty much anytime you meet someone (during daytime)
  
• bonne matinée = have a good morning
  
• bonne journée = although similar in meaning as bonjour, used mostly after having met someone for the first time in the day, to wish him a good day
• bonne après-midi = similarly, used to wish someone a good afternoon when parting ways. Note that après-midi can be both masculine and feminine, so bon après-midi works as well, and is pronounced the same. If it is late in the afternoon, you can also say bonne fin d'après-midi (have a good rest of the afternoon)
  
• bonsoir = good evening (when meeting someone)
• bonne soirée = enjoy your evening (again, used generally when leaving someone). You can also say bonne fin de soirée (have a good rest of the evening, e.g. if you're leaving for the night but people are staying behind)
  
• bonne nuit = good night
• bon week-end = have a good week-end