27f1c7fc___Common_Wood___Lumber_Defects__0
[2] A curve along the face of a board that usually runs from end to end. [0] 
Bow
B o w
C h e c k
C r o o k
C u p
S h a k e
S p l i t
T w i s t
W a n e
M a c h i n e B u r n
Sam Rogers' Common Wood & Lumber Defects
0