memento /mi-menˈtō/

1. Something kept or given as a reminder
2. A fit of reverie (obsolete)

memento mori /mōˈrī or moˈrē/ noun (Latin)

1. Remember that you must die
2. Anything (eg a skull) to remind one of mortality

• you've got me there
• you wait
• yow
• yowe
• yowes
• yowie
• yowies
• yowl
• yowled
• yowley
• yowling
• yowlings
• yowls
• yows
• yo-yo
• yo-yoed
• yo-yoing
• yo-yos
• ypight
• yplast
• yplight
• ypsiliform
• ypsiloid
• ypsilon
• ypsilons