shibboleth /shibˈə-leth/

1. The criterion, catchword or catchphrase of a group, party or sect by which members may be identified
2. A slogan
3. A peculiarity of speech
4. The Gileadite test-word to distinguish an Ephraimite, who could not pronounce sh (from Bible, Judges 12.5–6)
5. Any such test

• long ten
• long-term
• long-termer
• long-time
• long-togs
• Long Tom
• long ton
• long-tongued
• long tons
• long-track skating
• long-track speedskating
• longueur
• longueurs
• long vacation
• long vacations
• long view
• long-visaged
• interlocks
• interlocution
• interlocutions
• interlocutor
• interlocutors
• interlocutory
• interlocutress
• interlocutrice