Interrogatory \In`ter*rog"a*to*ry\, n.; pl. Interrogatories.
   [Cf. F. interrogatoire.]
   A formal question or inquiry; esp. (Law), a question or
   series of questions asked in writing, usually as part of a
   lawsuit. --Macaulay.
   [1913 Webster]

INTERROGATORIES. Material and pertinent questions, in writing, to necessary 
points, not confessed, exhibited for the examination of witnesses or persons 
who are to give testimony in the cause. 
     2. They are either original and direct on the part, of him who produces 
the witnesses, or cross and counter, on behalf of the adverse party, to 
examine witnesses produced on the other side. Either party, plaintiff or 
defendant, may exhibit original or cross interrogatories. 
     3. The form which interrogatories assume, is as various as the minds of 
the persons who propound them. They should be as distinct as possible, and 
capable of a definite answer; and they should leave no loop-holes for 
evasion to an unwilling witness. Care must be observed to put no leading 
questions in original interrogatories, for these always lead to 
inconvenience; and for scandal or impertinence, interrogatories will, under 
certain Circumstances, be suppressed. Vide Will. on Interrogatories, passim; 
Gresl. Ea. Ev pt. 1, c. 3, s. 1; Vin. Ab. h. t.; Hind's Pr. 317; 4 Bouv. 
Inst. n. 4419, et seq.