Dictionary meanings for yena from Apte and Monier-Williams.
apte + mw
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Apte Sanskrit-English Dictionary
ind. (Strictly instr. sing. of yada used adverbially) 1 Where- by, by which, wherefore, on which account, by means of which; kiṃ ta- dyena mano hartumalaṃ syātāṃ na śṛṇvatāṃ R. 15. 64, 14. 74.
2 So that; darśaya taṃ caurasiṃhaṃ yena vyāpādayāmi Pt. 4.
3 Since, because.
Monier-Williams Sanskrit-English Dictionary
ind. (instr. of 3. ya) by whom or by which, by means of which, by which way RV. &c 856,2 172313 ind. in which direction, whither, where MBh.; Ka1v. &c 856,2 172313.1 ind. in which manner Pa1rGr2.; Mn. 856,2 172313.2 ind. on which account, in consequence of which, wherefore MBh.; R.; Katha1s. 856,2 172313.3