• (n.) Dotted or pitted ducts or vessels forming the pores seen in many kinds of wood.
Both·ren'chy·ma noun [ Greek ... pit + ... something poured in. Formed like parenchyma .] (Botany) Dotted or pitted ducts or vessels forming the pores seen in many kinds of wood. 
bothrenchyma Dotted or pitted ducts or vessels forming the pores seen in many kinds of wood.