The Collaborative International Dictionary
Underfong \Un`der*fong"\, v. t. [AS. underfongen, p. p. of underf?n to undertake; under under + f?n to take. See Fang to seize.]
To undertake; to take in hand; to receive. [Obs.]
--Piers Plowman. Rom. of R.
To insnare; to circumvent. [Obs.]
To sustain; to support; to guard.
vb. (alternative form of underfang English)