закалявам meaning in English

anneal [annealed, annealing, anneals]▼(to subject to great heat and then cooling)
verb
[UK: ə.ˈniːl] [US: ə.ˈniːl]

chill [chilled, chilling, chills]▼(to harden a metal surface by sudden cooling)
verb
[UK: tʃɪl] [US: ˈtʃɪl]

harden [hardened, hardening, hardens]▼(to make hard(er))
verb
[UK: ˈhɑːd.n̩] [US: ˈhɑːr.dn̩]

quench [quenched, quenching, quenches]▼(to cool rapidly by immersion)
verb
[UK: kwentʃ] [US: ˈkwentʃ]

temper [tempered, tempering, tempers]▼(to strengthen or toughen by heat treatment)
verb
[UK: ˈtem.pə(r)] [US: ˈtem.pər]

chill [chilled, chilling, chills]▼(to become hard by rapid cooling)
verb
[UK: tʃɪl] [US: ˈtʃɪl]