Cl past sg. tron, pres. ptcp. trynande; Pat past 3 sg. tron; WA treyned, pres. 3 sg. trines, trenes
'go, march'(Modern English )
Always derived from ON, cp. ODan trene, OSw trīna 'to go, tread', with past trān (no OWN form survives). The etymology of the OEN v. is obscure; Nielsen says the v. (and n. trin) are 'vel beslægtet med' verbs derived from PGmc *treðan-, but doesn't elaborate, and Hellquist similarly notes these verbs are among many words in Gmc for 'tread etc.' starting with tr-.
Proposed ON Etymon (OIcel representative)
Other Scandinavian Reflexes
Norw trine, ODan trene, trine, OSw trīna, Sw dial trina, trena
Phonological and morphological markers
Attested from 15c. texts (after c1390 Susan. (Vrn)), and chiefly N/EM and alliterative (MED, OED).
Occurrences in the Gersum Corpus
Pe 1113; Cl 132, 976; Pat 101; WA 694, 4888, 5171 etc.