a structure or box where bees live and produce honey; a beehive.

（ミツバチの）巣箱

a place that is full of activity and people; a busy center of activity (figurative).

活動が盛んな場所（にぎやかな中心地）

a raised, itchy spot on the skin (often used in the plural 'hives')—urticaria.

蕁麻疹（じんましん）・皮膚の盛り上がったかゆみのある斑点

to put or confine bees in a hive; to house a swarm in a hive.

（ミツバチを）巣箱に入れる

to separate or spin off (often used with 'off' as 'hive off'): to form a smaller unit from a larger organization.

（～を）切り離す・分割する（しばしば 'hive off' の形で）