Here are some:
Trainer
Silicon
Monitor
Solicit
Genital
Stained
Grained
Denizen
Decimal
Sprites
Prairie
Conical
The second letter of the seven letter word meaning "one-fourth" is "u." The word is "quarter."u as in quarter
passkey
U (the word is Quarter)
quarter
quarter
quarter
signals
addressapproveboarderberriescorrodechurnedcarrioncharitycurrantcurrentdepressdecreedentrustembraceencrustglorifyflaringflirtedhorrifyhurriedharriedimpressmarriedoperatepetrifyrepressregressretracescoringsternlyscornedsharpenshortenskirtedstoriesspurnedstartedswirledspiralsterrainthirstyterrifyworried
enraged
courier
flavour
Labours