"hardened skin," 1560s, from Latin callus, variant of callum "hard skin," related to callere "be hard," from PIE root *kal- (3) "hard" (cognates: Sanskrit kalika "bud," Old Irish calath "hard," Old Church Slavonic kaliti "to cool, harden").
雙語(yǔ)例句
1. I walked to him and took his outstretched hand which was rough with callus.
我走向他，握起他那長(zhǎng)滿老繭的手。
來自辭典例句
2. PP 333 promote callus induction of ttiree kinds of varieties except Dixie Green.