a thickened and hardened part of the skin or soft tissue, especially in an area that has been subjected to friction
胼胝,老茧。
【医】 骨痂。
【植】 愈伤组织;胼胝体。
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callusn.胼胝;老茧;胼胝体;骨痂;愈伤组织
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callsvt.呼叫;称呼;召集;(call的第三人称单数)
"mid 16th cent.: from Latin