Webster's Revised Unabridged Dictionary
F. ajutage, for ajoutage, fr. ajouter, to add, LL. adjuxtare, fr. L. ad, + juxta, near to, nigh. Cf. Adjutage Adjustage Adjust
Chambers's Twentieth Century Dictionary
Fr.—Fr. ajouter. See Adjust.
A very strong tube is fixed to the cock, Ro', and to the ajutage, A'.
"Scientific American Supplement, No. 821, Sep. 26, 1891" by Various