Tail beam

tail beam
Joist supported by header at both ends, from a header in a floor opening to the sill header.
takayuka ...

3. Architecture A beam tailed into a wall. Also called tail beam.
4. Music A triangular piece of ebony to which the lower ends of the strings of a violin or other related instruments are attached.

See also: Architecture, Beam, Rafter, Norma, Sill