LAUGH v.
y, or so as not to be observed, especially while apparently preserving a grave or serious demeanor toward the person or persons laughed at. -- To laugh out, to laugh in spite of some restraining influence; to laugh aloud. -- To laugh out of the other corner (or side) of the mouth, to weep or cry; to feel regret, vexa…
SLEEVE n.
laugh privately or unperceived, especially while apparently preserving a grave or serious demeanor toward the person or persons laughed at; that is, perhaps, originally, by hiding the face in the wide sleeves of former times. -- To pin, or hang, on the sleeve of, to be, or make, dependent upon.