  We analyze various possible interpretations of the narrow state
$D_{sJ}^+(2632)$ observed by SELEX Collaboration recently, which lies above
threshold and has abnormal decay pattern. These interpretations include: (1)
several versions of tetraquarks; (2) conventional $c\bar s$ meson such as the
first radial excitation of $D_s(2112)$ with abnormally large SU(3) symmetry
breaking; (3) conventional $c\bar s$ meson with abnormally large $\eta_1$
coupling; (4) heavy hybrid meson. We discuss the physical implications of each
interpretation. For example, if the existence of $D_{sJ}^+(2632)$ is confirmed
as the first radial excitation of $D_s(2112)$ by other experiments, it will be
helpful to look for (1) its SU(3) flavor partners $D_{J}^{0,+}(2530)$; (2) its
B-meson analogues $B_{J}^{0,+}(5840), B_{sJ}^+(5940)$; (3) S-wave two pion
decay modes.
