The condition called de Quervain's tenosynovitis causes pain on the inside of the wrist and forearm just above the thumb. It is a common problem affecting the wrist and is usually easy to diagnose.
â¢ DOUBLE FLAT (noun) The noun DOUBLE FLAT has 1 sense: 1. a musical notation of two flats in front of a note indicating that it is to be lowered by two semitones. Familiarity information: DOUBLE FLAT used as a noun is very rare.
Definition of flat for Students. 1  1 : a level area of land : plain. 2  2 : a flat part or surface the flat of the hand. 3  3 : a note or tone that is a half step lower than the note named.  4 : a sign â­ meaning that the pitch of a musical note is to be lower by a half 1  step. 5 : a tire that has lost  air.