A sit-in was a nonviolent resistance technique associated with the civil-rights movement of the 1950s and 1960s. It was used effectively by blacks protesting racism in public lunch counters in the South in the early 1960s.
In a sit-down strike, workers barricade themselves inside the factories. The objective is to shut down the factory by not allowing employers to continue production with strikebreakers. Sit-down strikes were popular with industrial unions in the 1930s, but not with employers or the public.
Upanishads - the philosophical parts of the Vedas. 'upa' (near) 'ni' (down) sad (to sit) - the act of sitting down by one's Guru to receive instruction.
Svastikasana (Sanskrit) [from svastika the four-footed cross + asana sitting in a posture]
A particular mode of sitting practiced in hatha yoga, in which the toes are placed in the inner hollow of the knees; "the second of the four principal postures of the eighty-four prescribed in Hatha Yoga practices" (TG 315).
Psi term for a person, who is not present at the time of a psychic reading, for whom the reading is given. Similar or alternative term is "proxy sitting."