phengite /fenˈjīt/, also phengites /-jīˈtēz/

1. A transparent stone used in ancient times for windows, prob selenite
2. Sometimes applied to kinds of mica

• BSI
• B-side
• BSL
• BSM
• BST
• BT
• Bt
• BTA
• BTCV
• BTEC
• BTO
• btu
• BTU
• Btu
• btw
• BTW
• bu.
• buat
• buats
• buaze
• buazes
• bub
• buba
• bubal
• bubaline